1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2020 Bootlin 4 * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com> 5 */ 6 7 #include <linux/clk.h> 8 #include <linux/delay.h> 9 #include <linux/device.h> 10 #include <linux/i2c.h> 11 #include <linux/module.h> 12 #include <linux/of_graph.h> 13 #include <linux/pm_runtime.h> 14 #include <linux/regulator/consumer.h> 15 #include <linux/videodev2.h> 16 #include <media/v4l2-ctrls.h> 17 #include <media/v4l2-device.h> 18 #include <media/v4l2-fwnode.h> 19 #include <media/v4l2-image-sizes.h> 20 #include <media/v4l2-mediabus.h> 21 22 /* Clock rate */ 23 24 #define OV5648_XVCLK_RATE 24000000 25 26 /* Register definitions */ 27 28 /* System */ 29 30 #define OV5648_SW_STANDBY_REG 0x100 31 #define OV5648_SW_STANDBY_STREAM_ON BIT(0) 32 33 #define OV5648_SW_RESET_REG 0x103 34 #define OV5648_SW_RESET_RESET BIT(0) 35 36 #define OV5648_PAD_OEN0_REG 0x3000 37 #define OV5648_PAD_OEN1_REG 0x3001 38 #define OV5648_PAD_OEN2_REG 0x3002 39 #define OV5648_PAD_OUT0_REG 0x3008 40 #define OV5648_PAD_OUT1_REG 0x3009 41 42 #define OV5648_CHIP_ID_H_REG 0x300a 43 #define OV5648_CHIP_ID_H_VALUE 0x56 44 #define OV5648_CHIP_ID_L_REG 0x300b 45 #define OV5648_CHIP_ID_L_VALUE 0x48 46 47 #define OV5648_PAD_OUT2_REG 0x300d 48 #define OV5648_PAD_SEL0_REG 0x300e 49 #define OV5648_PAD_SEL1_REG 0x300f 50 #define OV5648_PAD_SEL2_REG 0x3010 51 #define OV5648_PAD_PK_REG 0x3011 52 #define OV5648_PAD_PK_PD_DATO_EN BIT(7) 53 #define OV5648_PAD_PK_DRIVE_STRENGTH_1X (0 << 5) 54 #define OV5648_PAD_PK_DRIVE_STRENGTH_2X (2 << 5) 55 #define OV5648_PAD_PK_FREX_N BIT(1) 56 57 #define OV5648_A_PWC_PK_O0_REG 0x3013 58 #define OV5648_A_PWC_PK_O0_BP_REGULATOR_N BIT(3) 59 #define OV5648_A_PWC_PK_O1_REG 0x3014 60 61 #define OV5648_MIPI_PHY0_REG 0x3016 62 #define OV5648_MIPI_PHY1_REG 0x3017 63 #define OV5648_MIPI_SC_CTRL0_REG 0x3018 64 #define OV5648_MIPI_SC_CTRL0_MIPI_LANES(v) (((v) << 5) & GENMASK(7, 5)) 65 #define OV5648_MIPI_SC_CTRL0_PHY_HS_TX_PD BIT(4) 66 #define OV5648_MIPI_SC_CTRL0_PHY_LP_RX_PD BIT(3) 67 #define OV5648_MIPI_SC_CTRL0_MIPI_EN BIT(2) 68 #define OV5648_MIPI_SC_CTRL0_MIPI_SUSP BIT(1) 69 #define OV5648_MIPI_SC_CTRL0_LANE_DIS_OP BIT(0) 70 #define OV5648_MIPI_SC_CTRL1_REG 0x3019 71 #define OV5648_MISC_CTRL0_REG 0x3021 72 #define OV5648_MIPI_SC_CTRL2_REG 0x3022 73 #define OV5648_SUB_ID_REG 0x302a 74 75 #define OV5648_PLL_CTRL0_REG 0x3034 76 #define OV5648_PLL_CTRL0_PLL_CHARGE_PUMP(v) (((v) << 4) & GENMASK(6, 4)) 77 #define OV5648_PLL_CTRL0_BITS(v) ((v) & GENMASK(3, 0)) 78 #define OV5648_PLL_CTRL1_REG 0x3035 79 #define OV5648_PLL_CTRL1_SYS_DIV(v) (((v) << 4) & GENMASK(7, 4)) 80 #define OV5648_PLL_CTRL1_MIPI_DIV(v) ((v) & GENMASK(3, 0)) 81 #define OV5648_PLL_MUL_REG 0x3036 82 #define OV5648_PLL_MUL(v) ((v) & GENMASK(7, 0)) 83 #define OV5648_PLL_DIV_REG 0x3037 84 #define OV5648_PLL_DIV_ROOT_DIV(v) ((((v) - 1) << 4) & BIT(4)) 85 #define OV5648_PLL_DIV_PLL_PRE_DIV(v) ((v) & GENMASK(3, 0)) 86 #define OV5648_PLL_DEBUG_REG 0x3038 87 #define OV5648_PLL_BYPASS_REG 0x3039 88 89 #define OV5648_PLLS_BYPASS_REG 0x303a 90 #define OV5648_PLLS_MUL_REG 0x303b 91 #define OV5648_PLLS_MUL(v) ((v) & GENMASK(4, 0)) 92 #define OV5648_PLLS_CTRL_REG 0x303c 93 #define OV5648_PLLS_CTRL_PLL_CHARGE_PUMP(v) (((v) << 4) & GENMASK(6, 4)) 94 #define OV5648_PLLS_CTRL_SYS_DIV(v) ((v) & GENMASK(3, 0)) 95 #define OV5648_PLLS_DIV_REG 0x303d 96 #define OV5648_PLLS_DIV_PLLS_PRE_DIV(v) (((v) << 4) & GENMASK(5, 4)) 97 #define OV5648_PLLS_DIV_PLLS_DIV_R(v) ((((v) - 1) << 2) & BIT(2)) 98 #define OV5648_PLLS_DIV_PLLS_SEL_DIV(v) ((v) & GENMASK(1, 0)) 99 100 #define OV5648_SRB_CTRL_REG 0x3106 101 #define OV5648_SRB_CTRL_SCLK_DIV(v) (((v) << 2) & GENMASK(3, 2)) 102 #define OV5648_SRB_CTRL_RESET_ARBITER_EN BIT(1) 103 #define OV5648_SRB_CTRL_SCLK_ARBITER_EN BIT(0) 104 105 /* Group Hold */ 106 107 #define OV5648_GROUP_ADR0_REG 0x3200 108 #define OV5648_GROUP_ADR1_REG 0x3201 109 #define OV5648_GROUP_ADR2_REG 0x3202 110 #define OV5648_GROUP_ADR3_REG 0x3203 111 #define OV5648_GROUP_LEN0_REG 0x3204 112 #define OV5648_GROUP_LEN1_REG 0x3205 113 #define OV5648_GROUP_LEN2_REG 0x3206 114 #define OV5648_GROUP_LEN3_REG 0x3207 115 #define OV5648_GROUP_ACCESS_REG 0x3208 116 117 /* Exposure/gain/banding */ 118 119 #define OV5648_EXPOSURE_CTRL_HH_REG 0x3500 120 #define OV5648_EXPOSURE_CTRL_HH(v) (((v) & GENMASK(19, 16)) >> 16) 121 #define OV5648_EXPOSURE_CTRL_HH_VALUE(v) (((v) << 16) & GENMASK(19, 16)) 122 #define OV5648_EXPOSURE_CTRL_H_REG 0x3501 123 #define OV5648_EXPOSURE_CTRL_H(v) (((v) & GENMASK(15, 8)) >> 8) 124 #define OV5648_EXPOSURE_CTRL_H_VALUE(v) (((v) << 8) & GENMASK(15, 8)) 125 #define OV5648_EXPOSURE_CTRL_L_REG 0x3502 126 #define OV5648_EXPOSURE_CTRL_L(v) ((v) & GENMASK(7, 0)) 127 #define OV5648_EXPOSURE_CTRL_L_VALUE(v) ((v) & GENMASK(7, 0)) 128 #define OV5648_MANUAL_CTRL_REG 0x3503 129 #define OV5648_MANUAL_CTRL_FRAME_DELAY(v) (((v) << 4) & GENMASK(5, 4)) 130 #define OV5648_MANUAL_CTRL_AGC_MANUAL_EN BIT(1) 131 #define OV5648_MANUAL_CTRL_AEC_MANUAL_EN BIT(0) 132 #define OV5648_GAIN_CTRL_H_REG 0x350a 133 #define OV5648_GAIN_CTRL_H(v) (((v) & GENMASK(9, 8)) >> 8) 134 #define OV5648_GAIN_CTRL_H_VALUE(v) (((v) << 8) & GENMASK(9, 8)) 135 #define OV5648_GAIN_CTRL_L_REG 0x350b 136 #define OV5648_GAIN_CTRL_L(v) ((v) & GENMASK(7, 0)) 137 #define OV5648_GAIN_CTRL_L_VALUE(v) ((v) & GENMASK(7, 0)) 138 139 #define OV5648_ANALOG_CTRL0_REG_BASE 0x3600 140 #define OV5648_ANALOG_CTRL1_REG_BASE 0x3700 141 142 #define OV5648_AEC_CTRL0_REG 0x3a00 143 #define OV5648_AEC_CTRL0_DEBUG BIT(6) 144 #define OV5648_AEC_CTRL0_DEBAND_EN BIT(5) 145 #define OV5648_AEC_CTRL0_DEBAND_LOW_LIMIT_EN BIT(4) 146 #define OV5648_AEC_CTRL0_START_SEL_EN BIT(3) 147 #define OV5648_AEC_CTRL0_NIGHT_MODE_EN BIT(2) 148 #define OV5648_AEC_CTRL0_FREEZE_EN BIT(0) 149 #define OV5648_EXPOSURE_MIN_REG 0x3a01 150 #define OV5648_EXPOSURE_MAX_60_H_REG 0x3a02 151 #define OV5648_EXPOSURE_MAX_60_L_REG 0x3a03 152 #define OV5648_AEC_CTRL5_REG 0x3a05 153 #define OV5648_AEC_CTRL6_REG 0x3a06 154 #define OV5648_AEC_CTRL7_REG 0x3a07 155 #define OV5648_BANDING_STEP_50_H_REG 0x3a08 156 #define OV5648_BANDING_STEP_50_L_REG 0x3a09 157 #define OV5648_BANDING_STEP_60_H_REG 0x3a0a 158 #define OV5648_BANDING_STEP_60_L_REG 0x3a0b 159 #define OV5648_AEC_CTRLC_REG 0x3a0c 160 #define OV5648_BANDING_MAX_60_REG 0x3a0d 161 #define OV5648_BANDING_MAX_50_REG 0x3a0e 162 #define OV5648_WPT_REG 0x3a0f 163 #define OV5648_BPT_REG 0x3a10 164 #define OV5648_VPT_HIGH_REG 0x3a11 165 #define OV5648_AVG_MANUAL_REG 0x3a12 166 #define OV5648_PRE_GAIN_REG 0x3a13 167 #define OV5648_EXPOSURE_MAX_50_H_REG 0x3a14 168 #define OV5648_EXPOSURE_MAX_50_L_REG 0x3a15 169 #define OV5648_GAIN_BASE_NIGHT_REG 0x3a17 170 #define OV5648_AEC_GAIN_CEILING_H_REG 0x3a18 171 #define OV5648_AEC_GAIN_CEILING_L_REG 0x3a19 172 #define OV5648_DIFF_MAX_REG 0x3a1a 173 #define OV5648_WPT2_REG 0x3a1b 174 #define OV5648_LED_ADD_ROW_H_REG 0x3a1c 175 #define OV5648_LED_ADD_ROW_L_REG 0x3a1d 176 #define OV5648_BPT2_REG 0x3a1e 177 #define OV5648_VPT_LOW_REG 0x3a1f 178 #define OV5648_AEC_CTRL20_REG 0x3a20 179 #define OV5648_AEC_CTRL21_REG 0x3a21 180 181 #define OV5648_AVG_START_X_H_REG 0x5680 182 #define OV5648_AVG_START_X_L_REG 0x5681 183 #define OV5648_AVG_START_Y_H_REG 0x5682 184 #define OV5648_AVG_START_Y_L_REG 0x5683 185 #define OV5648_AVG_WINDOW_X_H_REG 0x5684 186 #define OV5648_AVG_WINDOW_X_L_REG 0x5685 187 #define OV5648_AVG_WINDOW_Y_H_REG 0x5686 188 #define OV5648_AVG_WINDOW_Y_L_REG 0x5687 189 #define OV5648_AVG_WEIGHT00_REG 0x5688 190 #define OV5648_AVG_WEIGHT01_REG 0x5689 191 #define OV5648_AVG_WEIGHT02_REG 0x568a 192 #define OV5648_AVG_WEIGHT03_REG 0x568b 193 #define OV5648_AVG_WEIGHT04_REG 0x568c 194 #define OV5648_AVG_WEIGHT05_REG 0x568d 195 #define OV5648_AVG_WEIGHT06_REG 0x568e 196 #define OV5648_AVG_WEIGHT07_REG 0x568f 197 #define OV5648_AVG_CTRL10_REG 0x5690 198 #define OV5648_AVG_WEIGHT_SUM_REG 0x5691 199 #define OV5648_AVG_READOUT_REG 0x5693 200 201 #define OV5648_DIG_CTRL0_REG 0x5a00 202 #define OV5648_DIG_COMP_MAN_H_REG 0x5a02 203 #define OV5648_DIG_COMP_MAN_L_REG 0x5a03 204 205 #define OV5648_GAINC_MAN_H_REG 0x5a20 206 #define OV5648_GAINC_MAN_L_REG 0x5a21 207 #define OV5648_GAINC_DGC_MAN_H_REG 0x5a22 208 #define OV5648_GAINC_DGC_MAN_L_REG 0x5a23 209 #define OV5648_GAINC_CTRL0_REG 0x5a24 210 211 #define OV5648_GAINF_ANA_NUM_REG 0x5a40 212 #define OV5648_GAINF_DIG_GAIN_REG 0x5a41 213 214 /* Timing */ 215 216 #define OV5648_CROP_START_X_H_REG 0x3800 217 #define OV5648_CROP_START_X_H(v) (((v) & GENMASK(11, 8)) >> 8) 218 #define OV5648_CROP_START_X_L_REG 0x3801 219 #define OV5648_CROP_START_X_L(v) ((v) & GENMASK(7, 0)) 220 #define OV5648_CROP_START_Y_H_REG 0x3802 221 #define OV5648_CROP_START_Y_H(v) (((v) & GENMASK(11, 8)) >> 8) 222 #define OV5648_CROP_START_Y_L_REG 0x3803 223 #define OV5648_CROP_START_Y_L(v) ((v) & GENMASK(7, 0)) 224 #define OV5648_CROP_END_X_H_REG 0x3804 225 #define OV5648_CROP_END_X_H(v) (((v) & GENMASK(11, 8)) >> 8) 226 #define OV5648_CROP_END_X_L_REG 0x3805 227 #define OV5648_CROP_END_X_L(v) ((v) & GENMASK(7, 0)) 228 #define OV5648_CROP_END_Y_H_REG 0x3806 229 #define OV5648_CROP_END_Y_H(v) (((v) & GENMASK(11, 8)) >> 8) 230 #define OV5648_CROP_END_Y_L_REG 0x3807 231 #define OV5648_CROP_END_Y_L(v) ((v) & GENMASK(7, 0)) 232 #define OV5648_OUTPUT_SIZE_X_H_REG 0x3808 233 #define OV5648_OUTPUT_SIZE_X_H(v) (((v) & GENMASK(11, 8)) >> 8) 234 #define OV5648_OUTPUT_SIZE_X_L_REG 0x3809 235 #define OV5648_OUTPUT_SIZE_X_L(v) ((v) & GENMASK(7, 0)) 236 #define OV5648_OUTPUT_SIZE_Y_H_REG 0x380a 237 #define OV5648_OUTPUT_SIZE_Y_H(v) (((v) & GENMASK(11, 8)) >> 8) 238 #define OV5648_OUTPUT_SIZE_Y_L_REG 0x380b 239 #define OV5648_OUTPUT_SIZE_Y_L(v) ((v) & GENMASK(7, 0)) 240 #define OV5648_HTS_H_REG 0x380c 241 #define OV5648_HTS_H(v) (((v) & GENMASK(12, 8)) >> 8) 242 #define OV5648_HTS_L_REG 0x380d 243 #define OV5648_HTS_L(v) ((v) & GENMASK(7, 0)) 244 #define OV5648_VTS_H_REG 0x380e 245 #define OV5648_VTS_H(v) (((v) & GENMASK(15, 8)) >> 8) 246 #define OV5648_VTS_L_REG 0x380f 247 #define OV5648_VTS_L(v) ((v) & GENMASK(7, 0)) 248 #define OV5648_OFFSET_X_H_REG 0x3810 249 #define OV5648_OFFSET_X_H(v) (((v) & GENMASK(11, 8)) >> 8) 250 #define OV5648_OFFSET_X_L_REG 0x3811 251 #define OV5648_OFFSET_X_L(v) ((v) & GENMASK(7, 0)) 252 #define OV5648_OFFSET_Y_H_REG 0x3812 253 #define OV5648_OFFSET_Y_H(v) (((v) & GENMASK(11, 8)) >> 8) 254 #define OV5648_OFFSET_Y_L_REG 0x3813 255 #define OV5648_OFFSET_Y_L(v) ((v) & GENMASK(7, 0)) 256 #define OV5648_SUB_INC_X_REG 0x3814 257 #define OV5648_SUB_INC_X_ODD(v) (((v) << 4) & GENMASK(7, 4)) 258 #define OV5648_SUB_INC_X_EVEN(v) ((v) & GENMASK(3, 0)) 259 #define OV5648_SUB_INC_Y_REG 0x3815 260 #define OV5648_SUB_INC_Y_ODD(v) (((v) << 4) & GENMASK(7, 4)) 261 #define OV5648_SUB_INC_Y_EVEN(v) ((v) & GENMASK(3, 0)) 262 #define OV5648_HSYNCST_H_REG 0x3816 263 #define OV5648_HSYNCST_H(v) (((v) >> 8) & 0xf) 264 #define OV5648_HSYNCST_L_REG 0x3817 265 #define OV5648_HSYNCST_L(v) ((v) & GENMASK(7, 0)) 266 #define OV5648_HSYNCW_H_REG 0x3818 267 #define OV5648_HSYNCW_H(v) (((v) >> 8) & 0xf) 268 #define OV5648_HSYNCW_L_REG 0x3819 269 #define OV5648_HSYNCW_L(v) ((v) & GENMASK(7, 0)) 270 271 #define OV5648_TC20_REG 0x3820 272 #define OV5648_TC20_DEBUG BIT(6) 273 #define OV5648_TC20_FLIP_VERT_ISP_EN BIT(2) 274 #define OV5648_TC20_FLIP_VERT_SENSOR_EN BIT(1) 275 #define OV5648_TC20_BINNING_VERT_EN BIT(0) 276 #define OV5648_TC21_REG 0x3821 277 #define OV5648_TC21_FLIP_HORZ_ISP_EN BIT(2) 278 #define OV5648_TC21_FLIP_HORZ_SENSOR_EN BIT(1) 279 #define OV5648_TC21_BINNING_HORZ_EN BIT(0) 280 281 /* Strobe/exposure */ 282 283 #define OV5648_STROBE_REG 0x3b00 284 #define OV5648_FREX_EXP_HH_REG 0x3b01 285 #define OV5648_SHUTTER_DLY_H_REG 0x3b02 286 #define OV5648_SHUTTER_DLY_L_REG 0x3b03 287 #define OV5648_FREX_EXP_H_REG 0x3b04 288 #define OV5648_FREX_EXP_L_REG 0x3b05 289 #define OV5648_FREX_CTRL_REG 0x3b06 290 #define OV5648_FREX_MODE_SEL_REG 0x3b07 291 #define OV5648_FREX_MODE_SEL_FREX_SA1 BIT(4) 292 #define OV5648_FREX_MODE_SEL_FX1_FM_EN BIT(3) 293 #define OV5648_FREX_MODE_SEL_FREX_INV BIT(2) 294 #define OV5648_FREX_MODE_SEL_MODE1 0x0 295 #define OV5648_FREX_MODE_SEL_MODE2 0x1 296 #define OV5648_FREX_MODE_SEL_ROLLING 0x2 297 #define OV5648_FREX_EXP_REQ_REG 0x3b08 298 #define OV5648_FREX_SHUTTER_DLY_REG 0x3b09 299 #define OV5648_FREX_RST_LEN_REG 0x3b0a 300 #define OV5648_STROBE_WIDTH_HH_REG 0x3b0b 301 #define OV5648_STROBE_WIDTH_H_REG 0x3b0c 302 303 /* OTP */ 304 305 #define OV5648_OTP_DATA_REG_BASE 0x3d00 306 #define OV5648_OTP_PROGRAM_CTRL_REG 0x3d80 307 #define OV5648_OTP_LOAD_CTRL_REG 0x3d81 308 309 /* PSRAM */ 310 311 #define OV5648_PSRAM_CTRL1_REG 0x3f01 312 #define OV5648_PSRAM_CTRLF_REG 0x3f0f 313 314 /* Black Level */ 315 316 #define OV5648_BLC_CTRL0_REG 0x4000 317 #define OV5648_BLC_CTRL1_REG 0x4001 318 #define OV5648_BLC_CTRL1_START_LINE(v) ((v) & GENMASK(5, 0)) 319 #define OV5648_BLC_CTRL2_REG 0x4002 320 #define OV5648_BLC_CTRL2_AUTO_EN BIT(6) 321 #define OV5648_BLC_CTRL2_RESET_FRAME_NUM(v) ((v) & GENMASK(5, 0)) 322 #define OV5648_BLC_CTRL3_REG 0x4003 323 #define OV5648_BLC_LINE_NUM_REG 0x4004 324 #define OV5648_BLC_LINE_NUM(v) ((v) & GENMASK(7, 0)) 325 #define OV5648_BLC_CTRL5_REG 0x4005 326 #define OV5648_BLC_CTRL5_UPDATE_EN BIT(1) 327 #define OV5648_BLC_LEVEL_REG 0x4009 328 329 /* Frame */ 330 331 #define OV5648_FRAME_CTRL_REG 0x4200 332 #define OV5648_FRAME_ON_NUM_REG 0x4201 333 #define OV5648_FRAME_OFF_NUM_REG 0x4202 334 335 /* MIPI CSI-2 */ 336 337 #define OV5648_MIPI_CTRL0_REG 0x4800 338 #define OV5648_MIPI_CTRL0_CLK_LANE_AUTOGATE BIT(5) 339 #define OV5648_MIPI_CTRL0_LANE_SYNC_EN BIT(4) 340 #define OV5648_MIPI_CTRL0_LANE_SELECT_LANE1 0 341 #define OV5648_MIPI_CTRL0_LANE_SELECT_LANE2 BIT(3) 342 #define OV5648_MIPI_CTRL0_IDLE_LP00 0 343 #define OV5648_MIPI_CTRL0_IDLE_LP11 BIT(2) 344 345 #define OV5648_MIPI_CTRL1_REG 0x4801 346 #define OV5648_MIPI_CTRL2_REG 0x4802 347 #define OV5648_MIPI_CTRL3_REG 0x4803 348 #define OV5648_MIPI_CTRL4_REG 0x4804 349 #define OV5648_MIPI_CTRL5_REG 0x4805 350 #define OV5648_MIPI_MAX_FRAME_COUNT_H_REG 0x4810 351 #define OV5648_MIPI_MAX_FRAME_COUNT_L_REG 0x4811 352 #define OV5648_MIPI_CTRL14_REG 0x4814 353 #define OV5648_MIPI_DT_SPKT_REG 0x4815 354 #define OV5648_MIPI_HS_ZERO_MIN_H_REG 0x4818 355 #define OV5648_MIPI_HS_ZERO_MIN_L_REG 0x4819 356 #define OV5648_MIPI_HS_TRAIN_MIN_H_REG 0x481a 357 #define OV5648_MIPI_HS_TRAIN_MIN_L_REG 0x481b 358 #define OV5648_MIPI_CLK_ZERO_MIN_H_REG 0x481c 359 #define OV5648_MIPI_CLK_ZERO_MIN_L_REG 0x481d 360 #define OV5648_MIPI_CLK_PREPARE_MIN_H_REG 0x481e 361 #define OV5648_MIPI_CLK_PREPARE_MIN_L_REG 0x481f 362 #define OV5648_MIPI_CLK_POST_MIN_H_REG 0x4820 363 #define OV5648_MIPI_CLK_POST_MIN_L_REG 0x4821 364 #define OV5648_MIPI_CLK_TRAIL_MIN_H_REG 0x4822 365 #define OV5648_MIPI_CLK_TRAIL_MIN_L_REG 0x4823 366 #define OV5648_MIPI_LPX_P_MIN_H_REG 0x4824 367 #define OV5648_MIPI_LPX_P_MIN_L_REG 0x4825 368 #define OV5648_MIPI_HS_PREPARE_MIN_H_REG 0x4826 369 #define OV5648_MIPI_HS_PREPARE_MIN_L_REG 0x4827 370 #define OV5648_MIPI_HS_EXIT_MIN_H_REG 0x4828 371 #define OV5648_MIPI_HS_EXIT_MIN_L_REG 0x4829 372 #define OV5648_MIPI_HS_ZERO_MIN_UI_REG 0x482a 373 #define OV5648_MIPI_HS_TRAIL_MIN_UI_REG 0x482b 374 #define OV5648_MIPI_CLK_ZERO_MIN_UI_REG 0x482c 375 #define OV5648_MIPI_CLK_PREPARE_MIN_UI_REG 0x482d 376 #define OV5648_MIPI_CLK_POST_MIN_UI_REG 0x482e 377 #define OV5648_MIPI_CLK_TRAIL_MIN_UI_REG 0x482f 378 #define OV5648_MIPI_LPX_P_MIN_UI_REG 0x4830 379 #define OV5648_MIPI_HS_PREPARE_MIN_UI_REG 0x4831 380 #define OV5648_MIPI_HS_EXIT_MIN_UI_REG 0x4832 381 #define OV5648_MIPI_REG_MIN_H_REG 0x4833 382 #define OV5648_MIPI_REG_MIN_L_REG 0x4834 383 #define OV5648_MIPI_REG_MAX_H_REG 0x4835 384 #define OV5648_MIPI_REG_MAX_L_REG 0x4836 385 #define OV5648_MIPI_PCLK_PERIOD_REG 0x4837 386 #define OV5648_MIPI_WKUP_DLY_REG 0x4838 387 #define OV5648_MIPI_LP_GPIO_REG 0x483b 388 #define OV5648_MIPI_SNR_PCLK_DIV_REG 0x4843 389 390 /* ISP */ 391 392 #define OV5648_ISP_CTRL0_REG 0x5000 393 #define OV5648_ISP_CTRL0_BLACK_CORRECT_EN BIT(2) 394 #define OV5648_ISP_CTRL0_WHITE_CORRECT_EN BIT(1) 395 #define OV5648_ISP_CTRL1_REG 0x5001 396 #define OV5648_ISP_CTRL1_AWB_EN BIT(0) 397 #define OV5648_ISP_CTRL2_REG 0x5002 398 #define OV5648_ISP_CTRL2_WIN_EN BIT(6) 399 #define OV5648_ISP_CTRL2_OTP_EN BIT(1) 400 #define OV5648_ISP_CTRL2_AWB_GAIN_EN BIT(0) 401 #define OV5648_ISP_CTRL3_REG 0x5003 402 #define OV5648_ISP_CTRL3_BUF_EN BIT(3) 403 #define OV5648_ISP_CTRL3_BIN_MAN_SET BIT(2) 404 #define OV5648_ISP_CTRL3_BIN_AUTO_EN BIT(1) 405 #define OV5648_ISP_CTRL4_REG 0x5004 406 #define OV5648_ISP_CTRL5_REG 0x5005 407 #define OV5648_ISP_CTRL6_REG 0x5006 408 #define OV5648_ISP_CTRL7_REG 0x5007 409 #define OV5648_ISP_MAN_OFFSET_X_H_REG 0x5008 410 #define OV5648_ISP_MAN_OFFSET_X_L_REG 0x5009 411 #define OV5648_ISP_MAN_OFFSET_Y_H_REG 0x500a 412 #define OV5648_ISP_MAN_OFFSET_Y_L_REG 0x500b 413 #define OV5648_ISP_MAN_WIN_OFFSET_X_H_REG 0x500c 414 #define OV5648_ISP_MAN_WIN_OFFSET_X_L_REG 0x500d 415 #define OV5648_ISP_MAN_WIN_OFFSET_Y_H_REG 0x500e 416 #define OV5648_ISP_MAN_WIN_OFFSET_Y_L_REG 0x500f 417 #define OV5648_ISP_MAN_WIN_OUTPUT_X_H_REG 0x5010 418 #define OV5648_ISP_MAN_WIN_OUTPUT_X_L_REG 0x5011 419 #define OV5648_ISP_MAN_WIN_OUTPUT_Y_H_REG 0x5012 420 #define OV5648_ISP_MAN_WIN_OUTPUT_Y_L_REG 0x5013 421 #define OV5648_ISP_MAN_INPUT_X_H_REG 0x5014 422 #define OV5648_ISP_MAN_INPUT_X_L_REG 0x5015 423 #define OV5648_ISP_MAN_INPUT_Y_H_REG 0x5016 424 #define OV5648_ISP_MAN_INPUT_Y_L_REG 0x5017 425 #define OV5648_ISP_CTRL18_REG 0x5018 426 #define OV5648_ISP_CTRL19_REG 0x5019 427 #define OV5648_ISP_CTRL1A_REG 0x501a 428 #define OV5648_ISP_CTRL1D_REG 0x501d 429 #define OV5648_ISP_CTRL1F_REG 0x501f 430 #define OV5648_ISP_CTRL1F_OUTPUT_EN 3 431 #define OV5648_ISP_CTRL25_REG 0x5025 432 433 #define OV5648_ISP_CTRL3D_REG 0x503d 434 #define OV5648_ISP_CTRL3D_PATTERN_EN BIT(7) 435 #define OV5648_ISP_CTRL3D_ROLLING_BAR_EN BIT(6) 436 #define OV5648_ISP_CTRL3D_TRANSPARENT_MODE BIT(5) 437 #define OV5648_ISP_CTRL3D_SQUARES_BW_MODE BIT(4) 438 #define OV5648_ISP_CTRL3D_PATTERN_COLOR_BARS 0 439 #define OV5648_ISP_CTRL3D_PATTERN_RANDOM_DATA 1 440 #define OV5648_ISP_CTRL3D_PATTERN_COLOR_SQUARES 2 441 #define OV5648_ISP_CTRL3D_PATTERN_INPUT 3 442 443 #define OV5648_ISP_CTRL3E_REG 0x503e 444 #define OV5648_ISP_CTRL4B_REG 0x504b 445 #define OV5648_ISP_CTRL4B_POST_BIN_H_EN BIT(5) 446 #define OV5648_ISP_CTRL4B_POST_BIN_V_EN BIT(4) 447 #define OV5648_ISP_CTRL4C_REG 0x504c 448 #define OV5648_ISP_CTRL57_REG 0x5057 449 #define OV5648_ISP_CTRL58_REG 0x5058 450 #define OV5648_ISP_CTRL59_REG 0x5059 451 452 #define OV5648_ISP_WINDOW_START_X_H_REG 0x5980 453 #define OV5648_ISP_WINDOW_START_X_L_REG 0x5981 454 #define OV5648_ISP_WINDOW_START_Y_H_REG 0x5982 455 #define OV5648_ISP_WINDOW_START_Y_L_REG 0x5983 456 #define OV5648_ISP_WINDOW_WIN_X_H_REG 0x5984 457 #define OV5648_ISP_WINDOW_WIN_X_L_REG 0x5985 458 #define OV5648_ISP_WINDOW_WIN_Y_H_REG 0x5986 459 #define OV5648_ISP_WINDOW_WIN_Y_L_REG 0x5987 460 #define OV5648_ISP_WINDOW_MAN_REG 0x5988 461 462 /* White Balance */ 463 464 #define OV5648_AWB_CTRL_REG 0x5180 465 #define OV5648_AWB_CTRL_FAST_AWB BIT(6) 466 #define OV5648_AWB_CTRL_GAIN_FREEZE_EN BIT(5) 467 #define OV5648_AWB_CTRL_SUM_FREEZE_EN BIT(4) 468 #define OV5648_AWB_CTRL_GAIN_MANUAL_EN BIT(3) 469 470 #define OV5648_AWB_DELTA_REG 0x5181 471 #define OV5648_AWB_STABLE_RANGE_REG 0x5182 472 #define OV5648_AWB_STABLE_RANGE_WIDE_REG 0x5183 473 #define OV5648_HSIZE_MAN_REG 0x5185 474 475 #define OV5648_GAIN_RED_MAN_H_REG 0x5186 476 #define OV5648_GAIN_RED_MAN_H(v) (((v) & GENMASK(11, 8)) >> 8) 477 #define OV5648_GAIN_RED_MAN_L_REG 0x5187 478 #define OV5648_GAIN_RED_MAN_L(v) ((v) & GENMASK(7, 0)) 479 #define OV5648_GAIN_GREEN_MAN_H_REG 0x5188 480 #define OV5648_GAIN_GREEN_MAN_H(v) (((v) & GENMASK(11, 8)) >> 8) 481 #define OV5648_GAIN_GREEN_MAN_L_REG 0x5189 482 #define OV5648_GAIN_GREEN_MAN_L(v) ((v) & GENMASK(7, 0)) 483 #define OV5648_GAIN_BLUE_MAN_H_REG 0x518a 484 #define OV5648_GAIN_BLUE_MAN_H(v) (((v) & GENMASK(11, 8)) >> 8) 485 #define OV5648_GAIN_BLUE_MAN_L_REG 0x518b 486 #define OV5648_GAIN_BLUE_MAN_L(v) ((v) & GENMASK(7, 0)) 487 #define OV5648_GAIN_RED_LIMIT_REG 0x518c 488 #define OV5648_GAIN_GREEN_LIMIT_REG 0x518d 489 #define OV5648_GAIN_BLUE_LIMIT_REG 0x518e 490 #define OV5648_AWB_FRAME_COUNT_REG 0x518f 491 #define OV5648_AWB_BASE_MAN_REG 0x51df 492 493 /* Macros */ 494 495 #define ov5648_subdev_sensor(s) \ 496 container_of(s, struct ov5648_sensor, subdev) 497 498 #define ov5648_ctrl_subdev(c) \ 499 (&container_of((c)->handler, struct ov5648_sensor, \ 500 ctrls.handler)->subdev) 501 502 /* Data structures */ 503 504 struct ov5648_register_value { 505 u16 address; 506 u8 value; 507 unsigned int delay_ms; 508 }; 509 510 /* 511 * PLL1 Clock Tree: 512 * 513 * +-< XVCLK 514 * | 515 * +-+ pll_pre_div (0x3037 [3:0], special values: 5: 1.5, 7: 2.5) 516 * | 517 * +-+ pll_mul (0x3036 [7:0]) 518 * | 519 * +-+ sys_div (0x3035 [7:4]) 520 * | 521 * +-+ mipi_div (0x3035 [3:0]) 522 * | | 523 * | +-> MIPI_SCLK 524 * | | 525 * | +-+ mipi_phy_div (2) 526 * | | 527 * | +-> MIPI_CLK 528 * | 529 * +-+ root_div (0x3037 [4]) 530 * | 531 * +-+ bit_div (0x3034 [3:0], 8 bits: 2, 10 bits: 2.5, other: 1) 532 * | 533 * +-+ sclk_div (0x3106 [3:2]) 534 * | 535 * +-> SCLK 536 * | 537 * +-+ mipi_div (0x3035, 1: PCLK = SCLK) 538 * | 539 * +-> PCLK 540 */ 541 542 struct ov5648_pll1_config { 543 unsigned int pll_pre_div; 544 unsigned int pll_mul; 545 unsigned int sys_div; 546 unsigned int root_div; 547 unsigned int sclk_div; 548 unsigned int mipi_div; 549 }; 550 551 /* 552 * PLL2 Clock Tree: 553 * 554 * +-< XVCLK 555 * | 556 * +-+ plls_pre_div (0x303d [5:4], special values: 0: 1, 1: 1.5) 557 * | 558 * +-+ plls_div_r (0x303d [2]) 559 * | 560 * +-+ plls_mul (0x303b [4:0]) 561 * | 562 * +-+ sys_div (0x303c [3:0]) 563 * | 564 * +-+ sel_div (0x303d [1:0], special values: 0: 1, 3: 2.5) 565 * | 566 * +-> ADCLK 567 */ 568 569 struct ov5648_pll2_config { 570 unsigned int plls_pre_div; 571 unsigned int plls_div_r; 572 unsigned int plls_mul; 573 unsigned int sys_div; 574 unsigned int sel_div; 575 }; 576 577 /* 578 * General formulas for (array-centered) mode calculation: 579 * - photo_array_width = 2624 580 * - crop_start_x = (photo_array_width - output_size_x) / 2 581 * - crop_end_x = crop_start_x + offset_x + output_size_x - 1 582 * 583 * - photo_array_height = 1956 584 * - crop_start_y = (photo_array_height - output_size_y) / 2 585 * - crop_end_y = crop_start_y + offset_y + output_size_y - 1 586 */ 587 588 struct ov5648_mode { 589 unsigned int crop_start_x; 590 unsigned int offset_x; 591 unsigned int output_size_x; 592 unsigned int crop_end_x; 593 unsigned int hts; 594 595 unsigned int crop_start_y; 596 unsigned int offset_y; 597 unsigned int output_size_y; 598 unsigned int crop_end_y; 599 unsigned int vts; 600 601 bool binning_x; 602 bool binning_y; 603 604 unsigned int inc_x_odd; 605 unsigned int inc_x_even; 606 unsigned int inc_y_odd; 607 unsigned int inc_y_even; 608 609 /* 8-bit frame interval followed by 10-bit frame interval. */ 610 struct v4l2_fract frame_interval[2]; 611 612 /* 8-bit config followed by 10-bit config. */ 613 const struct ov5648_pll1_config *pll1_config[2]; 614 const struct ov5648_pll2_config *pll2_config; 615 616 const struct ov5648_register_value *register_values; 617 unsigned int register_values_count; 618 }; 619 620 struct ov5648_state { 621 const struct ov5648_mode *mode; 622 u32 mbus_code; 623 624 bool streaming; 625 }; 626 627 struct ov5648_ctrls { 628 struct v4l2_ctrl *exposure_auto; 629 struct v4l2_ctrl *exposure; 630 631 struct v4l2_ctrl *gain_auto; 632 struct v4l2_ctrl *gain; 633 634 struct v4l2_ctrl *white_balance_auto; 635 struct v4l2_ctrl *red_balance; 636 struct v4l2_ctrl *blue_balance; 637 638 struct v4l2_ctrl *link_freq; 639 struct v4l2_ctrl *pixel_rate; 640 641 struct v4l2_ctrl_handler handler; 642 }; 643 644 struct ov5648_sensor { 645 struct device *dev; 646 struct i2c_client *i2c_client; 647 struct gpio_desc *reset; 648 struct gpio_desc *powerdown; 649 struct regulator *avdd; 650 struct regulator *dvdd; 651 struct regulator *dovdd; 652 struct clk *xvclk; 653 654 struct v4l2_fwnode_endpoint endpoint; 655 struct v4l2_subdev subdev; 656 struct media_pad pad; 657 658 struct mutex mutex; 659 660 struct ov5648_state state; 661 struct ov5648_ctrls ctrls; 662 }; 663 664 /* Static definitions */ 665 666 /* 667 * XVCLK = 24 MHz 668 * SCLK = 84 MHz 669 * PCLK = 84 MHz 670 */ 671 static const struct ov5648_pll1_config ov5648_pll1_config_native_8_bits = { 672 .pll_pre_div = 3, 673 .pll_mul = 84, 674 .sys_div = 2, 675 .root_div = 1, 676 .sclk_div = 1, 677 .mipi_div = 1, 678 }; 679 680 /* 681 * XVCLK = 24 MHz 682 * SCLK = 84 MHz 683 * PCLK = 84 MHz 684 */ 685 static const struct ov5648_pll1_config ov5648_pll1_config_native_10_bits = { 686 .pll_pre_div = 3, 687 .pll_mul = 105, 688 .sys_div = 2, 689 .root_div = 1, 690 .sclk_div = 1, 691 .mipi_div = 1, 692 }; 693 694 /* 695 * XVCLK = 24 MHz 696 * ADCLK = 200 MHz 697 */ 698 static const struct ov5648_pll2_config ov5648_pll2_config_native = { 699 .plls_pre_div = 3, 700 .plls_div_r = 1, 701 .plls_mul = 25, 702 .sys_div = 1, 703 .sel_div = 1, 704 }; 705 706 static const struct ov5648_mode ov5648_modes[] = { 707 /* 2592x1944 */ 708 { 709 /* Horizontal */ 710 .crop_start_x = 16, 711 .offset_x = 0, 712 .output_size_x = 2592, 713 .crop_end_x = 2607, 714 .hts = 2816, 715 716 /* Vertical */ 717 .crop_start_y = 6, 718 .offset_y = 0, 719 .output_size_y = 1944, 720 .crop_end_y = 1949, 721 .vts = 1984, 722 723 /* Subsample increase */ 724 .inc_x_odd = 1, 725 .inc_x_even = 1, 726 .inc_y_odd = 1, 727 .inc_y_even = 1, 728 729 /* Frame Interval */ 730 .frame_interval = { 731 { 1, 15 }, 732 { 1, 15 }, 733 }, 734 735 /* PLL */ 736 .pll1_config = { 737 &ov5648_pll1_config_native_8_bits, 738 &ov5648_pll1_config_native_10_bits, 739 }, 740 .pll2_config = &ov5648_pll2_config_native, 741 }, 742 /* 1600x1200 (UXGA) */ 743 { 744 /* Horizontal */ 745 .crop_start_x = 512, 746 .offset_x = 0, 747 .output_size_x = 1600, 748 .crop_end_x = 2111, 749 .hts = 2816, 750 751 /* Vertical */ 752 .crop_start_y = 378, 753 .offset_y = 0, 754 .output_size_y = 1200, 755 .crop_end_y = 1577, 756 .vts = 1984, 757 758 /* Subsample increase */ 759 .inc_x_odd = 1, 760 .inc_x_even = 1, 761 .inc_y_odd = 1, 762 .inc_y_even = 1, 763 764 /* Frame Interval */ 765 .frame_interval = { 766 { 1, 15 }, 767 { 1, 15 }, 768 }, 769 770 /* PLL */ 771 .pll1_config = { 772 &ov5648_pll1_config_native_8_bits, 773 &ov5648_pll1_config_native_10_bits, 774 }, 775 .pll2_config = &ov5648_pll2_config_native, 776 }, 777 /* 1920x1080 (Full HD) */ 778 { 779 /* Horizontal */ 780 .crop_start_x = 352, 781 .offset_x = 0, 782 .output_size_x = 1920, 783 .crop_end_x = 2271, 784 .hts = 2816, 785 786 /* Vertical */ 787 .crop_start_y = 438, 788 .offset_y = 0, 789 .output_size_y = 1080, 790 .crop_end_y = 1517, 791 .vts = 1984, 792 793 /* Subsample increase */ 794 .inc_x_odd = 1, 795 .inc_x_even = 1, 796 .inc_y_odd = 1, 797 .inc_y_even = 1, 798 799 /* Frame Interval */ 800 .frame_interval = { 801 { 1, 15 }, 802 { 1, 15 }, 803 }, 804 805 /* PLL */ 806 .pll1_config = { 807 &ov5648_pll1_config_native_8_bits, 808 &ov5648_pll1_config_native_10_bits, 809 }, 810 .pll2_config = &ov5648_pll2_config_native, 811 }, 812 /* 1280x960 */ 813 { 814 /* Horizontal */ 815 .crop_start_x = 16, 816 .offset_x = 8, 817 .output_size_x = 1280, 818 .crop_end_x = 2607, 819 .hts = 1912, 820 821 /* Vertical */ 822 .crop_start_y = 6, 823 .offset_y = 6, 824 .output_size_y = 960, 825 .crop_end_y = 1949, 826 .vts = 1496, 827 828 /* Binning */ 829 .binning_x = true, 830 831 /* Subsample increase */ 832 .inc_x_odd = 3, 833 .inc_x_even = 1, 834 .inc_y_odd = 3, 835 .inc_y_even = 1, 836 837 /* Frame Interval */ 838 .frame_interval = { 839 { 1, 30 }, 840 { 1, 30 }, 841 }, 842 843 /* PLL */ 844 .pll1_config = { 845 &ov5648_pll1_config_native_8_bits, 846 &ov5648_pll1_config_native_10_bits, 847 }, 848 .pll2_config = &ov5648_pll2_config_native, 849 }, 850 /* 1280x720 (HD) */ 851 { 852 /* Horizontal */ 853 .crop_start_x = 16, 854 .offset_x = 8, 855 .output_size_x = 1280, 856 .crop_end_x = 2607, 857 .hts = 1912, 858 859 /* Vertical */ 860 .crop_start_y = 254, 861 .offset_y = 2, 862 .output_size_y = 720, 863 .crop_end_y = 1701, 864 .vts = 1496, 865 866 /* Binning */ 867 .binning_x = true, 868 869 /* Subsample increase */ 870 .inc_x_odd = 3, 871 .inc_x_even = 1, 872 .inc_y_odd = 3, 873 .inc_y_even = 1, 874 875 /* Frame Interval */ 876 .frame_interval = { 877 { 1, 30 }, 878 { 1, 30 }, 879 }, 880 881 /* PLL */ 882 .pll1_config = { 883 &ov5648_pll1_config_native_8_bits, 884 &ov5648_pll1_config_native_10_bits, 885 }, 886 .pll2_config = &ov5648_pll2_config_native, 887 }, 888 /* 640x480 (VGA) */ 889 { 890 /* Horizontal */ 891 .crop_start_x = 0, 892 .offset_x = 8, 893 .output_size_x = 640, 894 .crop_end_x = 2623, 895 .hts = 1896, 896 897 /* Vertical */ 898 .crop_start_y = 0, 899 .offset_y = 2, 900 .output_size_y = 480, 901 .crop_end_y = 1953, 902 .vts = 984, 903 904 /* Binning */ 905 .binning_x = true, 906 907 /* Subsample increase */ 908 .inc_x_odd = 7, 909 .inc_x_even = 1, 910 .inc_y_odd = 7, 911 .inc_y_even = 1, 912 913 /* Frame Interval */ 914 .frame_interval = { 915 { 1, 30 }, 916 { 1, 30 }, 917 }, 918 919 /* PLL */ 920 .pll1_config = { 921 &ov5648_pll1_config_native_8_bits, 922 &ov5648_pll1_config_native_10_bits, 923 }, 924 .pll2_config = &ov5648_pll2_config_native, 925 }, 926 }; 927 928 static const u32 ov5648_mbus_codes[] = { 929 MEDIA_BUS_FMT_SBGGR8_1X8, 930 MEDIA_BUS_FMT_SBGGR10_1X10, 931 }; 932 933 static const struct ov5648_register_value ov5648_init_sequence[] = { 934 /* PSRAM */ 935 { OV5648_PSRAM_CTRL1_REG, 0x0d }, 936 { OV5648_PSRAM_CTRLF_REG, 0xf5 }, 937 }; 938 939 static const s64 ov5648_link_freq_menu[] = { 940 210000000, 941 168000000, 942 }; 943 944 static const char *const ov5648_test_pattern_menu[] = { 945 "Disabled", 946 "Random data", 947 "Color bars", 948 "Color bars with rolling bar", 949 "Color squares", 950 "Color squares with rolling bar" 951 }; 952 953 static const u8 ov5648_test_pattern_bits[] = { 954 0, 955 OV5648_ISP_CTRL3D_PATTERN_EN | OV5648_ISP_CTRL3D_PATTERN_RANDOM_DATA, 956 OV5648_ISP_CTRL3D_PATTERN_EN | OV5648_ISP_CTRL3D_PATTERN_COLOR_BARS, 957 OV5648_ISP_CTRL3D_PATTERN_EN | OV5648_ISP_CTRL3D_ROLLING_BAR_EN | 958 OV5648_ISP_CTRL3D_PATTERN_COLOR_BARS, 959 OV5648_ISP_CTRL3D_PATTERN_EN | OV5648_ISP_CTRL3D_PATTERN_COLOR_SQUARES, 960 OV5648_ISP_CTRL3D_PATTERN_EN | OV5648_ISP_CTRL3D_ROLLING_BAR_EN | 961 OV5648_ISP_CTRL3D_PATTERN_COLOR_SQUARES, 962 }; 963 964 /* Input/Output */ 965 966 static int ov5648_read(struct ov5648_sensor *sensor, u16 address, u8 *value) 967 { 968 unsigned char data[2] = { address >> 8, address & 0xff }; 969 struct i2c_client *client = sensor->i2c_client; 970 int ret; 971 972 ret = i2c_master_send(client, data, sizeof(data)); 973 if (ret < 0) { 974 dev_dbg(&client->dev, "i2c send error at address %#04x\n", 975 address); 976 return ret; 977 } 978 979 ret = i2c_master_recv(client, value, 1); 980 if (ret < 0) { 981 dev_dbg(&client->dev, "i2c recv error at address %#04x\n", 982 address); 983 return ret; 984 } 985 986 return 0; 987 } 988 989 static int ov5648_write(struct ov5648_sensor *sensor, u16 address, u8 value) 990 { 991 unsigned char data[3] = { address >> 8, address & 0xff, value }; 992 struct i2c_client *client = sensor->i2c_client; 993 int ret; 994 995 ret = i2c_master_send(client, data, sizeof(data)); 996 if (ret < 0) { 997 dev_dbg(&client->dev, "i2c send error at address %#04x\n", 998 address); 999 return ret; 1000 } 1001 1002 return 0; 1003 } 1004 1005 static int ov5648_write_sequence(struct ov5648_sensor *sensor, 1006 const struct ov5648_register_value *sequence, 1007 unsigned int sequence_count) 1008 { 1009 unsigned int i; 1010 int ret = 0; 1011 1012 for (i = 0; i < sequence_count; i++) { 1013 ret = ov5648_write(sensor, sequence[i].address, 1014 sequence[i].value); 1015 if (ret) 1016 break; 1017 1018 if (sequence[i].delay_ms) 1019 msleep(sequence[i].delay_ms); 1020 } 1021 1022 return ret; 1023 } 1024 1025 static int ov5648_update_bits(struct ov5648_sensor *sensor, u16 address, 1026 u8 mask, u8 bits) 1027 { 1028 u8 value = 0; 1029 int ret; 1030 1031 ret = ov5648_read(sensor, address, &value); 1032 if (ret) 1033 return ret; 1034 1035 value &= ~mask; 1036 value |= bits; 1037 1038 ret = ov5648_write(sensor, address, value); 1039 if (ret) 1040 return ret; 1041 1042 return 0; 1043 } 1044 1045 /* Sensor */ 1046 1047 static int ov5648_sw_reset(struct ov5648_sensor *sensor) 1048 { 1049 return ov5648_write(sensor, OV5648_SW_RESET_REG, OV5648_SW_RESET_RESET); 1050 } 1051 1052 static int ov5648_sw_standby(struct ov5648_sensor *sensor, int standby) 1053 { 1054 u8 value = 0; 1055 1056 if (!standby) 1057 value = OV5648_SW_STANDBY_STREAM_ON; 1058 1059 return ov5648_write(sensor, OV5648_SW_STANDBY_REG, value); 1060 } 1061 1062 static int ov5648_chip_id_check(struct ov5648_sensor *sensor) 1063 { 1064 u16 regs[] = { OV5648_CHIP_ID_H_REG, OV5648_CHIP_ID_L_REG }; 1065 u8 values[] = { OV5648_CHIP_ID_H_VALUE, OV5648_CHIP_ID_L_VALUE }; 1066 unsigned int i; 1067 u8 value; 1068 int ret; 1069 1070 for (i = 0; i < ARRAY_SIZE(regs); i++) { 1071 ret = ov5648_read(sensor, regs[i], &value); 1072 if (ret < 0) 1073 return ret; 1074 1075 if (value != values[i]) { 1076 dev_err(sensor->dev, 1077 "chip id value mismatch: %#x instead of %#x\n", 1078 value, values[i]); 1079 return -EINVAL; 1080 } 1081 } 1082 1083 return 0; 1084 } 1085 1086 static int ov5648_avdd_internal_power(struct ov5648_sensor *sensor, int on) 1087 { 1088 return ov5648_write(sensor, OV5648_A_PWC_PK_O0_REG, 1089 on ? 0 : OV5648_A_PWC_PK_O0_BP_REGULATOR_N); 1090 } 1091 1092 static int ov5648_pad_configure(struct ov5648_sensor *sensor) 1093 { 1094 int ret; 1095 1096 /* Configure pads as input. */ 1097 1098 ret = ov5648_write(sensor, OV5648_PAD_OEN1_REG, 0); 1099 if (ret) 1100 return ret; 1101 1102 ret = ov5648_write(sensor, OV5648_PAD_OEN2_REG, 0); 1103 if (ret) 1104 return ret; 1105 1106 /* Disable FREX pin. */ 1107 1108 return ov5648_write(sensor, OV5648_PAD_PK_REG, 1109 OV5648_PAD_PK_DRIVE_STRENGTH_1X | 1110 OV5648_PAD_PK_FREX_N); 1111 } 1112 1113 static int ov5648_mipi_configure(struct ov5648_sensor *sensor) 1114 { 1115 struct v4l2_mbus_config_mipi_csi2 *bus_mipi_csi2 = 1116 &sensor->endpoint.bus.mipi_csi2; 1117 unsigned int lanes_count = bus_mipi_csi2->num_data_lanes; 1118 int ret; 1119 1120 ret = ov5648_write(sensor, OV5648_MIPI_CTRL0_REG, 1121 OV5648_MIPI_CTRL0_CLK_LANE_AUTOGATE | 1122 OV5648_MIPI_CTRL0_LANE_SELECT_LANE1 | 1123 OV5648_MIPI_CTRL0_IDLE_LP11); 1124 if (ret) 1125 return ret; 1126 1127 return ov5648_write(sensor, OV5648_MIPI_SC_CTRL0_REG, 1128 OV5648_MIPI_SC_CTRL0_MIPI_LANES(lanes_count) | 1129 OV5648_MIPI_SC_CTRL0_PHY_LP_RX_PD | 1130 OV5648_MIPI_SC_CTRL0_MIPI_EN); 1131 } 1132 1133 static int ov5648_black_level_configure(struct ov5648_sensor *sensor) 1134 { 1135 int ret; 1136 1137 /* Up to 6 lines are available for black level calibration. */ 1138 1139 ret = ov5648_write(sensor, OV5648_BLC_CTRL1_REG, 1140 OV5648_BLC_CTRL1_START_LINE(2)); 1141 if (ret) 1142 return ret; 1143 1144 ret = ov5648_write(sensor, OV5648_BLC_CTRL2_REG, 1145 OV5648_BLC_CTRL2_AUTO_EN | 1146 OV5648_BLC_CTRL2_RESET_FRAME_NUM(5)); 1147 if (ret) 1148 return ret; 1149 1150 ret = ov5648_write(sensor, OV5648_BLC_LINE_NUM_REG, 1151 OV5648_BLC_LINE_NUM(4)); 1152 if (ret) 1153 return ret; 1154 1155 return ov5648_update_bits(sensor, OV5648_BLC_CTRL5_REG, 1156 OV5648_BLC_CTRL5_UPDATE_EN, 1157 OV5648_BLC_CTRL5_UPDATE_EN); 1158 } 1159 1160 static int ov5648_isp_configure(struct ov5648_sensor *sensor) 1161 { 1162 u8 bits; 1163 int ret; 1164 1165 /* Enable black and white level correction. */ 1166 bits = OV5648_ISP_CTRL0_BLACK_CORRECT_EN | 1167 OV5648_ISP_CTRL0_WHITE_CORRECT_EN; 1168 1169 ret = ov5648_update_bits(sensor, OV5648_ISP_CTRL0_REG, bits, bits); 1170 if (ret) 1171 return ret; 1172 1173 /* Enable AWB. */ 1174 ret = ov5648_write(sensor, OV5648_ISP_CTRL1_REG, 1175 OV5648_ISP_CTRL1_AWB_EN); 1176 if (ret) 1177 return ret; 1178 1179 /* Enable AWB gain and windowing. */ 1180 ret = ov5648_write(sensor, OV5648_ISP_CTRL2_REG, 1181 OV5648_ISP_CTRL2_WIN_EN | 1182 OV5648_ISP_CTRL2_AWB_GAIN_EN); 1183 if (ret) 1184 return ret; 1185 1186 /* Enable buffering and auto-binning. */ 1187 ret = ov5648_write(sensor, OV5648_ISP_CTRL3_REG, 1188 OV5648_ISP_CTRL3_BUF_EN | 1189 OV5648_ISP_CTRL3_BIN_AUTO_EN); 1190 if (ret) 1191 return ret; 1192 1193 ret = ov5648_write(sensor, OV5648_ISP_CTRL4_REG, 0); 1194 if (ret) 1195 return ret; 1196 1197 ret = ov5648_write(sensor, OV5648_ISP_CTRL1F_REG, 1198 OV5648_ISP_CTRL1F_OUTPUT_EN); 1199 if (ret) 1200 return ret; 1201 1202 /* Enable post-binning filters. */ 1203 ret = ov5648_write(sensor, OV5648_ISP_CTRL4B_REG, 1204 OV5648_ISP_CTRL4B_POST_BIN_H_EN | 1205 OV5648_ISP_CTRL4B_POST_BIN_V_EN); 1206 if (ret) 1207 return ret; 1208 1209 /* Disable debanding and night mode. Debug bit seems necessary. */ 1210 ret = ov5648_write(sensor, OV5648_AEC_CTRL0_REG, 1211 OV5648_AEC_CTRL0_DEBUG | 1212 OV5648_AEC_CTRL0_START_SEL_EN); 1213 if (ret) 1214 return ret; 1215 1216 return ov5648_write(sensor, OV5648_MANUAL_CTRL_REG, 1217 OV5648_MANUAL_CTRL_FRAME_DELAY(1)); 1218 } 1219 1220 static unsigned long ov5648_mode_pll1_rate(struct ov5648_sensor *sensor, 1221 const struct ov5648_pll1_config *config) 1222 { 1223 unsigned long xvclk_rate; 1224 unsigned long pll1_rate; 1225 1226 xvclk_rate = clk_get_rate(sensor->xvclk); 1227 pll1_rate = xvclk_rate * config->pll_mul; 1228 1229 switch (config->pll_pre_div) { 1230 case 5: 1231 pll1_rate *= 3; 1232 pll1_rate /= 2; 1233 break; 1234 case 7: 1235 pll1_rate *= 5; 1236 pll1_rate /= 2; 1237 break; 1238 default: 1239 pll1_rate /= config->pll_pre_div; 1240 break; 1241 } 1242 1243 return pll1_rate; 1244 } 1245 1246 static int ov5648_mode_pll1_configure(struct ov5648_sensor *sensor, 1247 const struct ov5648_mode *mode, 1248 u32 mbus_code) 1249 { 1250 const struct ov5648_pll1_config *config; 1251 u8 value; 1252 int ret; 1253 1254 value = OV5648_PLL_CTRL0_PLL_CHARGE_PUMP(1); 1255 1256 switch (mbus_code) { 1257 case MEDIA_BUS_FMT_SBGGR8_1X8: 1258 config = mode->pll1_config[0]; 1259 value |= OV5648_PLL_CTRL0_BITS(8); 1260 break; 1261 case MEDIA_BUS_FMT_SBGGR10_1X10: 1262 config = mode->pll1_config[1]; 1263 value |= OV5648_PLL_CTRL0_BITS(10); 1264 break; 1265 default: 1266 return -EINVAL; 1267 } 1268 1269 ret = ov5648_write(sensor, OV5648_PLL_CTRL0_REG, value); 1270 if (ret) 1271 return ret; 1272 1273 ret = ov5648_write(sensor, OV5648_PLL_DIV_REG, 1274 OV5648_PLL_DIV_ROOT_DIV(config->root_div) | 1275 OV5648_PLL_DIV_PLL_PRE_DIV(config->pll_pre_div)); 1276 if (ret) 1277 return ret; 1278 1279 ret = ov5648_write(sensor, OV5648_PLL_MUL_REG, 1280 OV5648_PLL_MUL(config->pll_mul)); 1281 if (ret) 1282 return ret; 1283 1284 ret = ov5648_write(sensor, OV5648_PLL_CTRL1_REG, 1285 OV5648_PLL_CTRL1_SYS_DIV(config->sys_div) | 1286 OV5648_PLL_CTRL1_MIPI_DIV(config->mipi_div)); 1287 if (ret) 1288 return ret; 1289 1290 return ov5648_write(sensor, OV5648_SRB_CTRL_REG, 1291 OV5648_SRB_CTRL_SCLK_DIV(config->sclk_div) | 1292 OV5648_SRB_CTRL_SCLK_ARBITER_EN); 1293 } 1294 1295 static int ov5648_mode_pll2_configure(struct ov5648_sensor *sensor, 1296 const struct ov5648_mode *mode) 1297 { 1298 const struct ov5648_pll2_config *config = mode->pll2_config; 1299 int ret; 1300 1301 ret = ov5648_write(sensor, OV5648_PLLS_DIV_REG, 1302 OV5648_PLLS_DIV_PLLS_PRE_DIV(config->plls_pre_div) | 1303 OV5648_PLLS_DIV_PLLS_DIV_R(config->plls_div_r) | 1304 OV5648_PLLS_DIV_PLLS_SEL_DIV(config->sel_div)); 1305 if (ret) 1306 return ret; 1307 1308 ret = ov5648_write(sensor, OV5648_PLLS_MUL_REG, 1309 OV5648_PLLS_MUL(config->plls_mul)); 1310 if (ret) 1311 return ret; 1312 1313 return ov5648_write(sensor, OV5648_PLLS_CTRL_REG, 1314 OV5648_PLLS_CTRL_PLL_CHARGE_PUMP(1) | 1315 OV5648_PLLS_CTRL_SYS_DIV(config->sys_div)); 1316 } 1317 1318 static int ov5648_mode_configure(struct ov5648_sensor *sensor, 1319 const struct ov5648_mode *mode, u32 mbus_code) 1320 { 1321 int ret; 1322 1323 /* Crop Start X */ 1324 1325 ret = ov5648_write(sensor, OV5648_CROP_START_X_H_REG, 1326 OV5648_CROP_START_X_H(mode->crop_start_x)); 1327 if (ret) 1328 return ret; 1329 1330 ret = ov5648_write(sensor, OV5648_CROP_START_X_L_REG, 1331 OV5648_CROP_START_X_L(mode->crop_start_x)); 1332 if (ret) 1333 return ret; 1334 1335 /* Offset X */ 1336 1337 ret = ov5648_write(sensor, OV5648_OFFSET_X_H_REG, 1338 OV5648_OFFSET_X_H(mode->offset_x)); 1339 if (ret) 1340 return ret; 1341 1342 ret = ov5648_write(sensor, OV5648_OFFSET_X_L_REG, 1343 OV5648_OFFSET_X_L(mode->offset_x)); 1344 if (ret) 1345 return ret; 1346 1347 /* Output Size X */ 1348 1349 ret = ov5648_write(sensor, OV5648_OUTPUT_SIZE_X_H_REG, 1350 OV5648_OUTPUT_SIZE_X_H(mode->output_size_x)); 1351 if (ret) 1352 return ret; 1353 1354 ret = ov5648_write(sensor, OV5648_OUTPUT_SIZE_X_L_REG, 1355 OV5648_OUTPUT_SIZE_X_L(mode->output_size_x)); 1356 if (ret) 1357 return ret; 1358 1359 /* Crop End X */ 1360 1361 ret = ov5648_write(sensor, OV5648_CROP_END_X_H_REG, 1362 OV5648_CROP_END_X_H(mode->crop_end_x)); 1363 if (ret) 1364 return ret; 1365 1366 ret = ov5648_write(sensor, OV5648_CROP_END_X_L_REG, 1367 OV5648_CROP_END_X_L(mode->crop_end_x)); 1368 if (ret) 1369 return ret; 1370 1371 /* Horizontal Total Size */ 1372 1373 ret = ov5648_write(sensor, OV5648_HTS_H_REG, OV5648_HTS_H(mode->hts)); 1374 if (ret) 1375 return ret; 1376 1377 ret = ov5648_write(sensor, OV5648_HTS_L_REG, OV5648_HTS_L(mode->hts)); 1378 if (ret) 1379 return ret; 1380 1381 /* Crop Start Y */ 1382 1383 ret = ov5648_write(sensor, OV5648_CROP_START_Y_H_REG, 1384 OV5648_CROP_START_Y_H(mode->crop_start_y)); 1385 if (ret) 1386 return ret; 1387 1388 ret = ov5648_write(sensor, OV5648_CROP_START_Y_L_REG, 1389 OV5648_CROP_START_Y_L(mode->crop_start_y)); 1390 if (ret) 1391 return ret; 1392 1393 /* Offset Y */ 1394 1395 ret = ov5648_write(sensor, OV5648_OFFSET_Y_H_REG, 1396 OV5648_OFFSET_Y_H(mode->offset_y)); 1397 if (ret) 1398 return ret; 1399 1400 ret = ov5648_write(sensor, OV5648_OFFSET_Y_L_REG, 1401 OV5648_OFFSET_Y_L(mode->offset_y)); 1402 if (ret) 1403 return ret; 1404 1405 /* Output Size Y */ 1406 1407 ret = ov5648_write(sensor, OV5648_OUTPUT_SIZE_Y_H_REG, 1408 OV5648_OUTPUT_SIZE_Y_H(mode->output_size_y)); 1409 if (ret) 1410 return ret; 1411 1412 ret = ov5648_write(sensor, OV5648_OUTPUT_SIZE_Y_L_REG, 1413 OV5648_OUTPUT_SIZE_Y_L(mode->output_size_y)); 1414 if (ret) 1415 return ret; 1416 1417 /* Crop End Y */ 1418 1419 ret = ov5648_write(sensor, OV5648_CROP_END_Y_H_REG, 1420 OV5648_CROP_END_Y_H(mode->crop_end_y)); 1421 if (ret) 1422 return ret; 1423 1424 ret = ov5648_write(sensor, OV5648_CROP_END_Y_L_REG, 1425 OV5648_CROP_END_Y_L(mode->crop_end_y)); 1426 if (ret) 1427 return ret; 1428 1429 /* Vertical Total Size */ 1430 1431 ret = ov5648_write(sensor, OV5648_VTS_H_REG, OV5648_VTS_H(mode->vts)); 1432 if (ret) 1433 return ret; 1434 1435 ret = ov5648_write(sensor, OV5648_VTS_L_REG, OV5648_VTS_L(mode->vts)); 1436 if (ret) 1437 return ret; 1438 1439 /* Flip/Mirror/Binning */ 1440 1441 /* 1442 * A debug bit is enabled by default and needs to be cleared for 1443 * subsampling to work. 1444 */ 1445 ret = ov5648_update_bits(sensor, OV5648_TC20_REG, 1446 OV5648_TC20_DEBUG | 1447 OV5648_TC20_BINNING_VERT_EN, 1448 mode->binning_y ? OV5648_TC20_BINNING_VERT_EN : 1449 0); 1450 if (ret) 1451 return ret; 1452 1453 ret = ov5648_update_bits(sensor, OV5648_TC21_REG, 1454 OV5648_TC21_BINNING_HORZ_EN, 1455 mode->binning_x ? OV5648_TC21_BINNING_HORZ_EN : 1456 0); 1457 if (ret) 1458 return ret; 1459 1460 ret = ov5648_write(sensor, OV5648_SUB_INC_X_REG, 1461 OV5648_SUB_INC_X_ODD(mode->inc_x_odd) | 1462 OV5648_SUB_INC_X_EVEN(mode->inc_x_even)); 1463 if (ret) 1464 return ret; 1465 1466 ret = ov5648_write(sensor, OV5648_SUB_INC_Y_REG, 1467 OV5648_SUB_INC_Y_ODD(mode->inc_y_odd) | 1468 OV5648_SUB_INC_Y_EVEN(mode->inc_y_even)); 1469 if (ret) 1470 return ret; 1471 1472 /* PLLs */ 1473 1474 ret = ov5648_mode_pll1_configure(sensor, mode, mbus_code); 1475 if (ret) 1476 return ret; 1477 1478 ret = ov5648_mode_pll2_configure(sensor, mode); 1479 if (ret) 1480 return ret; 1481 1482 /* Extra registers */ 1483 1484 if (mode->register_values) { 1485 ret = ov5648_write_sequence(sensor, mode->register_values, 1486 mode->register_values_count); 1487 if (ret) 1488 return ret; 1489 } 1490 1491 return 0; 1492 } 1493 1494 static unsigned long ov5648_mode_mipi_clk_rate(struct ov5648_sensor *sensor, 1495 const struct ov5648_mode *mode, 1496 u32 mbus_code) 1497 { 1498 const struct ov5648_pll1_config *config; 1499 unsigned long pll1_rate; 1500 1501 switch (mbus_code) { 1502 case MEDIA_BUS_FMT_SBGGR8_1X8: 1503 config = mode->pll1_config[0]; 1504 break; 1505 case MEDIA_BUS_FMT_SBGGR10_1X10: 1506 config = mode->pll1_config[1]; 1507 break; 1508 default: 1509 return 0; 1510 } 1511 1512 pll1_rate = ov5648_mode_pll1_rate(sensor, config); 1513 1514 return pll1_rate / config->sys_div / config->mipi_div / 2; 1515 } 1516 1517 /* Exposure */ 1518 1519 static int ov5648_exposure_auto_configure(struct ov5648_sensor *sensor, 1520 bool enable) 1521 { 1522 return ov5648_update_bits(sensor, OV5648_MANUAL_CTRL_REG, 1523 OV5648_MANUAL_CTRL_AEC_MANUAL_EN, 1524 enable ? 0 : OV5648_MANUAL_CTRL_AEC_MANUAL_EN); 1525 } 1526 1527 static int ov5648_exposure_configure(struct ov5648_sensor *sensor, u32 exposure) 1528 { 1529 struct ov5648_ctrls *ctrls = &sensor->ctrls; 1530 int ret; 1531 1532 if (ctrls->exposure_auto->val != V4L2_EXPOSURE_MANUAL) 1533 return -EINVAL; 1534 1535 ret = ov5648_write(sensor, OV5648_EXPOSURE_CTRL_HH_REG, 1536 OV5648_EXPOSURE_CTRL_HH(exposure)); 1537 if (ret) 1538 return ret; 1539 1540 ret = ov5648_write(sensor, OV5648_EXPOSURE_CTRL_H_REG, 1541 OV5648_EXPOSURE_CTRL_H(exposure)); 1542 if (ret) 1543 return ret; 1544 1545 return ov5648_write(sensor, OV5648_EXPOSURE_CTRL_L_REG, 1546 OV5648_EXPOSURE_CTRL_L(exposure)); 1547 } 1548 1549 static int ov5648_exposure_value(struct ov5648_sensor *sensor, 1550 u32 *exposure) 1551 { 1552 u8 exposure_hh = 0, exposure_h = 0, exposure_l = 0; 1553 int ret; 1554 1555 ret = ov5648_read(sensor, OV5648_EXPOSURE_CTRL_HH_REG, &exposure_hh); 1556 if (ret) 1557 return ret; 1558 1559 ret = ov5648_read(sensor, OV5648_EXPOSURE_CTRL_H_REG, &exposure_h); 1560 if (ret) 1561 return ret; 1562 1563 ret = ov5648_read(sensor, OV5648_EXPOSURE_CTRL_L_REG, &exposure_l); 1564 if (ret) 1565 return ret; 1566 1567 *exposure = OV5648_EXPOSURE_CTRL_HH_VALUE((u32)exposure_hh) | 1568 OV5648_EXPOSURE_CTRL_H_VALUE((u32)exposure_h) | 1569 OV5648_EXPOSURE_CTRL_L_VALUE((u32)exposure_l); 1570 1571 return 0; 1572 } 1573 1574 /* Gain */ 1575 1576 static int ov5648_gain_auto_configure(struct ov5648_sensor *sensor, bool enable) 1577 { 1578 return ov5648_update_bits(sensor, OV5648_MANUAL_CTRL_REG, 1579 OV5648_MANUAL_CTRL_AGC_MANUAL_EN, 1580 enable ? 0 : OV5648_MANUAL_CTRL_AGC_MANUAL_EN); 1581 } 1582 1583 static int ov5648_gain_configure(struct ov5648_sensor *sensor, u32 gain) 1584 { 1585 struct ov5648_ctrls *ctrls = &sensor->ctrls; 1586 int ret; 1587 1588 if (ctrls->gain_auto->val) 1589 return -EINVAL; 1590 1591 ret = ov5648_write(sensor, OV5648_GAIN_CTRL_H_REG, 1592 OV5648_GAIN_CTRL_H(gain)); 1593 if (ret) 1594 return ret; 1595 1596 return ov5648_write(sensor, OV5648_GAIN_CTRL_L_REG, 1597 OV5648_GAIN_CTRL_L(gain)); 1598 } 1599 1600 static int ov5648_gain_value(struct ov5648_sensor *sensor, u32 *gain) 1601 { 1602 u8 gain_h = 0, gain_l = 0; 1603 int ret; 1604 1605 ret = ov5648_read(sensor, OV5648_GAIN_CTRL_H_REG, &gain_h); 1606 if (ret) 1607 return ret; 1608 1609 ret = ov5648_read(sensor, OV5648_GAIN_CTRL_L_REG, &gain_l); 1610 if (ret) 1611 return ret; 1612 1613 *gain = OV5648_GAIN_CTRL_H_VALUE((u32)gain_h) | 1614 OV5648_GAIN_CTRL_L_VALUE((u32)gain_l); 1615 1616 return 0; 1617 } 1618 1619 /* White Balance */ 1620 1621 static int ov5648_white_balance_auto_configure(struct ov5648_sensor *sensor, 1622 bool enable) 1623 { 1624 return ov5648_write(sensor, OV5648_AWB_CTRL_REG, 1625 enable ? 0 : OV5648_AWB_CTRL_GAIN_MANUAL_EN); 1626 } 1627 1628 static int ov5648_white_balance_configure(struct ov5648_sensor *sensor, 1629 u32 red_balance, u32 blue_balance) 1630 { 1631 struct ov5648_ctrls *ctrls = &sensor->ctrls; 1632 int ret; 1633 1634 if (ctrls->white_balance_auto->val) 1635 return -EINVAL; 1636 1637 ret = ov5648_write(sensor, OV5648_GAIN_RED_MAN_H_REG, 1638 OV5648_GAIN_RED_MAN_H(red_balance)); 1639 if (ret) 1640 return ret; 1641 1642 ret = ov5648_write(sensor, OV5648_GAIN_RED_MAN_L_REG, 1643 OV5648_GAIN_RED_MAN_L(red_balance)); 1644 if (ret) 1645 return ret; 1646 1647 ret = ov5648_write(sensor, OV5648_GAIN_BLUE_MAN_H_REG, 1648 OV5648_GAIN_BLUE_MAN_H(blue_balance)); 1649 if (ret) 1650 return ret; 1651 1652 return ov5648_write(sensor, OV5648_GAIN_BLUE_MAN_L_REG, 1653 OV5648_GAIN_BLUE_MAN_L(blue_balance)); 1654 } 1655 1656 /* Flip */ 1657 1658 static int ov5648_flip_vert_configure(struct ov5648_sensor *sensor, bool enable) 1659 { 1660 u8 bits = OV5648_TC20_FLIP_VERT_ISP_EN | 1661 OV5648_TC20_FLIP_VERT_SENSOR_EN; 1662 1663 return ov5648_update_bits(sensor, OV5648_TC20_REG, bits, 1664 enable ? bits : 0); 1665 } 1666 1667 static int ov5648_flip_horz_configure(struct ov5648_sensor *sensor, bool enable) 1668 { 1669 u8 bits = OV5648_TC21_FLIP_HORZ_ISP_EN | 1670 OV5648_TC21_FLIP_HORZ_SENSOR_EN; 1671 1672 return ov5648_update_bits(sensor, OV5648_TC21_REG, bits, 1673 enable ? bits : 0); 1674 } 1675 1676 /* Test Pattern */ 1677 1678 static int ov5648_test_pattern_configure(struct ov5648_sensor *sensor, 1679 unsigned int index) 1680 { 1681 if (index >= ARRAY_SIZE(ov5648_test_pattern_bits)) 1682 return -EINVAL; 1683 1684 return ov5648_write(sensor, OV5648_ISP_CTRL3D_REG, 1685 ov5648_test_pattern_bits[index]); 1686 } 1687 1688 /* State */ 1689 1690 static int ov5648_state_mipi_configure(struct ov5648_sensor *sensor, 1691 const struct ov5648_mode *mode, 1692 u32 mbus_code) 1693 { 1694 struct ov5648_ctrls *ctrls = &sensor->ctrls; 1695 struct v4l2_mbus_config_mipi_csi2 *bus_mipi_csi2 = 1696 &sensor->endpoint.bus.mipi_csi2; 1697 unsigned long mipi_clk_rate; 1698 unsigned int bits_per_sample; 1699 unsigned int lanes_count; 1700 unsigned int i, j; 1701 s64 mipi_pixel_rate; 1702 1703 mipi_clk_rate = ov5648_mode_mipi_clk_rate(sensor, mode, mbus_code); 1704 if (!mipi_clk_rate) 1705 return -EINVAL; 1706 1707 for (i = 0; i < ARRAY_SIZE(ov5648_link_freq_menu); i++) { 1708 s64 freq = ov5648_link_freq_menu[i]; 1709 1710 if (freq == mipi_clk_rate) 1711 break; 1712 } 1713 1714 for (j = 0; j < sensor->endpoint.nr_of_link_frequencies; j++) { 1715 u64 freq = sensor->endpoint.link_frequencies[j]; 1716 1717 if (freq == mipi_clk_rate) 1718 break; 1719 } 1720 1721 if (i == ARRAY_SIZE(ov5648_link_freq_menu)) { 1722 dev_err(sensor->dev, 1723 "failed to find %lu clk rate in link freq\n", 1724 mipi_clk_rate); 1725 } else if (j == sensor->endpoint.nr_of_link_frequencies) { 1726 dev_err(sensor->dev, 1727 "failed to find %lu clk rate in endpoint link-frequencies\n", 1728 mipi_clk_rate); 1729 } else { 1730 __v4l2_ctrl_s_ctrl(ctrls->link_freq, i); 1731 } 1732 1733 switch (mbus_code) { 1734 case MEDIA_BUS_FMT_SBGGR8_1X8: 1735 bits_per_sample = 8; 1736 break; 1737 case MEDIA_BUS_FMT_SBGGR10_1X10: 1738 bits_per_sample = 10; 1739 break; 1740 default: 1741 return -EINVAL; 1742 } 1743 1744 lanes_count = bus_mipi_csi2->num_data_lanes; 1745 mipi_pixel_rate = mipi_clk_rate * 2 * lanes_count / bits_per_sample; 1746 1747 __v4l2_ctrl_s_ctrl_int64(ctrls->pixel_rate, mipi_pixel_rate); 1748 1749 return 0; 1750 } 1751 1752 static int ov5648_state_configure(struct ov5648_sensor *sensor, 1753 const struct ov5648_mode *mode, 1754 u32 mbus_code) 1755 { 1756 int ret; 1757 1758 if (sensor->state.streaming) 1759 return -EBUSY; 1760 1761 /* State will be configured at first power on otherwise. */ 1762 if (pm_runtime_enabled(sensor->dev) && 1763 !pm_runtime_suspended(sensor->dev)) { 1764 ret = ov5648_mode_configure(sensor, mode, mbus_code); 1765 if (ret) 1766 return ret; 1767 } 1768 1769 ret = ov5648_state_mipi_configure(sensor, mode, mbus_code); 1770 if (ret) 1771 return ret; 1772 1773 sensor->state.mode = mode; 1774 sensor->state.mbus_code = mbus_code; 1775 1776 return 0; 1777 } 1778 1779 static int ov5648_state_init(struct ov5648_sensor *sensor) 1780 { 1781 int ret; 1782 1783 mutex_lock(&sensor->mutex); 1784 ret = ov5648_state_configure(sensor, &ov5648_modes[0], 1785 ov5648_mbus_codes[0]); 1786 mutex_unlock(&sensor->mutex); 1787 1788 return ret; 1789 } 1790 1791 /* Sensor Base */ 1792 1793 static int ov5648_sensor_init(struct ov5648_sensor *sensor) 1794 { 1795 int ret; 1796 1797 ret = ov5648_sw_reset(sensor); 1798 if (ret) { 1799 dev_err(sensor->dev, "failed to perform sw reset\n"); 1800 return ret; 1801 } 1802 1803 ret = ov5648_sw_standby(sensor, 1); 1804 if (ret) { 1805 dev_err(sensor->dev, "failed to set sensor standby\n"); 1806 return ret; 1807 } 1808 1809 ret = ov5648_chip_id_check(sensor); 1810 if (ret) { 1811 dev_err(sensor->dev, "failed to check sensor chip id\n"); 1812 return ret; 1813 } 1814 1815 ret = ov5648_avdd_internal_power(sensor, !sensor->avdd); 1816 if (ret) { 1817 dev_err(sensor->dev, "failed to set internal avdd power\n"); 1818 return ret; 1819 } 1820 1821 ret = ov5648_write_sequence(sensor, ov5648_init_sequence, 1822 ARRAY_SIZE(ov5648_init_sequence)); 1823 if (ret) { 1824 dev_err(sensor->dev, "failed to write init sequence\n"); 1825 return ret; 1826 } 1827 1828 ret = ov5648_pad_configure(sensor); 1829 if (ret) { 1830 dev_err(sensor->dev, "failed to configure pad\n"); 1831 return ret; 1832 } 1833 1834 ret = ov5648_mipi_configure(sensor); 1835 if (ret) { 1836 dev_err(sensor->dev, "failed to configure MIPI\n"); 1837 return ret; 1838 } 1839 1840 ret = ov5648_isp_configure(sensor); 1841 if (ret) { 1842 dev_err(sensor->dev, "failed to configure ISP\n"); 1843 return ret; 1844 } 1845 1846 ret = ov5648_black_level_configure(sensor); 1847 if (ret) { 1848 dev_err(sensor->dev, "failed to configure black level\n"); 1849 return ret; 1850 } 1851 1852 /* Configure current mode. */ 1853 ret = ov5648_state_configure(sensor, sensor->state.mode, 1854 sensor->state.mbus_code); 1855 if (ret) { 1856 dev_err(sensor->dev, "failed to configure state\n"); 1857 return ret; 1858 } 1859 1860 return 0; 1861 } 1862 1863 static int ov5648_sensor_power(struct ov5648_sensor *sensor, bool on) 1864 { 1865 /* Keep initialized to zero for disable label. */ 1866 int ret = 0; 1867 1868 /* 1869 * General notes about the power sequence: 1870 * - power-down GPIO must be active (low) during power-on; 1871 * - reset GPIO state does not matter during power-on; 1872 * - XVCLK must be provided 1 ms before register access; 1873 * - 10 ms are needed between power-down deassert and register access. 1874 */ 1875 1876 /* Note that regulator-and-GPIO-based power is untested. */ 1877 if (on) { 1878 gpiod_set_value_cansleep(sensor->reset, 1); 1879 gpiod_set_value_cansleep(sensor->powerdown, 1); 1880 1881 ret = regulator_enable(sensor->dovdd); 1882 if (ret) { 1883 dev_err(sensor->dev, 1884 "failed to enable DOVDD regulator\n"); 1885 goto disable; 1886 } 1887 1888 if (sensor->avdd) { 1889 ret = regulator_enable(sensor->avdd); 1890 if (ret) { 1891 dev_err(sensor->dev, 1892 "failed to enable AVDD regulator\n"); 1893 goto disable; 1894 } 1895 } 1896 1897 ret = regulator_enable(sensor->dvdd); 1898 if (ret) { 1899 dev_err(sensor->dev, 1900 "failed to enable DVDD regulator\n"); 1901 goto disable; 1902 } 1903 1904 /* According to OV5648 power up diagram. */ 1905 usleep_range(5000, 10000); 1906 1907 ret = clk_prepare_enable(sensor->xvclk); 1908 if (ret) { 1909 dev_err(sensor->dev, "failed to enable XVCLK clock\n"); 1910 goto disable; 1911 } 1912 1913 gpiod_set_value_cansleep(sensor->reset, 0); 1914 gpiod_set_value_cansleep(sensor->powerdown, 0); 1915 1916 usleep_range(20000, 25000); 1917 } else { 1918 disable: 1919 gpiod_set_value_cansleep(sensor->powerdown, 1); 1920 gpiod_set_value_cansleep(sensor->reset, 1); 1921 1922 clk_disable_unprepare(sensor->xvclk); 1923 1924 regulator_disable(sensor->dvdd); 1925 1926 if (sensor->avdd) 1927 regulator_disable(sensor->avdd); 1928 1929 regulator_disable(sensor->dovdd); 1930 } 1931 1932 return ret; 1933 } 1934 1935 /* Controls */ 1936 1937 static int ov5648_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 1938 { 1939 struct v4l2_subdev *subdev = ov5648_ctrl_subdev(ctrl); 1940 struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); 1941 struct ov5648_ctrls *ctrls = &sensor->ctrls; 1942 int ret; 1943 1944 switch (ctrl->id) { 1945 case V4L2_CID_EXPOSURE_AUTO: 1946 ret = ov5648_exposure_value(sensor, &ctrls->exposure->val); 1947 if (ret) 1948 return ret; 1949 break; 1950 case V4L2_CID_AUTOGAIN: 1951 ret = ov5648_gain_value(sensor, &ctrls->gain->val); 1952 if (ret) 1953 return ret; 1954 break; 1955 default: 1956 return -EINVAL; 1957 } 1958 1959 return 0; 1960 } 1961 1962 static int ov5648_s_ctrl(struct v4l2_ctrl *ctrl) 1963 { 1964 struct v4l2_subdev *subdev = ov5648_ctrl_subdev(ctrl); 1965 struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); 1966 struct ov5648_ctrls *ctrls = &sensor->ctrls; 1967 unsigned int index; 1968 bool enable; 1969 int ret; 1970 1971 /* Wait for the sensor to be on before setting controls. */ 1972 if (pm_runtime_suspended(sensor->dev)) 1973 return 0; 1974 1975 switch (ctrl->id) { 1976 case V4L2_CID_EXPOSURE_AUTO: 1977 enable = ctrl->val == V4L2_EXPOSURE_AUTO; 1978 1979 ret = ov5648_exposure_auto_configure(sensor, enable); 1980 if (ret) 1981 return ret; 1982 1983 if (!enable && ctrls->exposure->is_new) { 1984 ret = ov5648_exposure_configure(sensor, 1985 ctrls->exposure->val); 1986 if (ret) 1987 return ret; 1988 } 1989 break; 1990 case V4L2_CID_AUTOGAIN: 1991 enable = !!ctrl->val; 1992 1993 ret = ov5648_gain_auto_configure(sensor, enable); 1994 if (ret) 1995 return ret; 1996 1997 if (!enable) { 1998 ret = ov5648_gain_configure(sensor, ctrls->gain->val); 1999 if (ret) 2000 return ret; 2001 } 2002 break; 2003 case V4L2_CID_AUTO_WHITE_BALANCE: 2004 enable = !!ctrl->val; 2005 2006 ret = ov5648_white_balance_auto_configure(sensor, enable); 2007 if (ret) 2008 return ret; 2009 2010 if (!enable) { 2011 ret = ov5648_white_balance_configure(sensor, 2012 ctrls->red_balance->val, 2013 ctrls->blue_balance->val); 2014 if (ret) 2015 return ret; 2016 } 2017 break; 2018 case V4L2_CID_HFLIP: 2019 enable = !!ctrl->val; 2020 return ov5648_flip_horz_configure(sensor, enable); 2021 case V4L2_CID_VFLIP: 2022 enable = !!ctrl->val; 2023 return ov5648_flip_vert_configure(sensor, enable); 2024 case V4L2_CID_TEST_PATTERN: 2025 index = (unsigned int)ctrl->val; 2026 return ov5648_test_pattern_configure(sensor, index); 2027 default: 2028 return -EINVAL; 2029 } 2030 2031 return 0; 2032 } 2033 2034 static const struct v4l2_ctrl_ops ov5648_ctrl_ops = { 2035 .g_volatile_ctrl = ov5648_g_volatile_ctrl, 2036 .s_ctrl = ov5648_s_ctrl, 2037 }; 2038 2039 static int ov5648_ctrls_init(struct ov5648_sensor *sensor) 2040 { 2041 struct ov5648_ctrls *ctrls = &sensor->ctrls; 2042 struct v4l2_ctrl_handler *handler = &ctrls->handler; 2043 const struct v4l2_ctrl_ops *ops = &ov5648_ctrl_ops; 2044 int ret; 2045 2046 v4l2_ctrl_handler_init(handler, 32); 2047 2048 /* Use our mutex for ctrl locking. */ 2049 handler->lock = &sensor->mutex; 2050 2051 /* Exposure */ 2052 2053 ctrls->exposure_auto = v4l2_ctrl_new_std_menu(handler, ops, 2054 V4L2_CID_EXPOSURE_AUTO, 2055 V4L2_EXPOSURE_MANUAL, 0, 2056 V4L2_EXPOSURE_AUTO); 2057 2058 ctrls->exposure = v4l2_ctrl_new_std(handler, ops, V4L2_CID_EXPOSURE, 2059 16, 1048575, 16, 512); 2060 2061 v4l2_ctrl_auto_cluster(2, &ctrls->exposure_auto, 1, true); 2062 2063 /* Gain */ 2064 2065 ctrls->gain_auto = 2066 v4l2_ctrl_new_std(handler, ops, V4L2_CID_AUTOGAIN, 0, 1, 1, 1); 2067 2068 ctrls->gain = v4l2_ctrl_new_std(handler, ops, V4L2_CID_GAIN, 16, 1023, 2069 16, 16); 2070 2071 v4l2_ctrl_auto_cluster(2, &ctrls->gain_auto, 0, true); 2072 2073 /* White Balance */ 2074 2075 ctrls->white_balance_auto = 2076 v4l2_ctrl_new_std(handler, ops, V4L2_CID_AUTO_WHITE_BALANCE, 0, 2077 1, 1, 1); 2078 2079 ctrls->red_balance = v4l2_ctrl_new_std(handler, ops, 2080 V4L2_CID_RED_BALANCE, 0, 4095, 2081 1, 1024); 2082 2083 ctrls->blue_balance = v4l2_ctrl_new_std(handler, ops, 2084 V4L2_CID_BLUE_BALANCE, 0, 4095, 2085 1, 1024); 2086 2087 v4l2_ctrl_auto_cluster(3, &ctrls->white_balance_auto, 0, false); 2088 2089 /* Flip */ 2090 2091 v4l2_ctrl_new_std(handler, ops, V4L2_CID_HFLIP, 0, 1, 1, 0); 2092 v4l2_ctrl_new_std(handler, ops, V4L2_CID_VFLIP, 0, 1, 1, 0); 2093 2094 /* Test Pattern */ 2095 2096 v4l2_ctrl_new_std_menu_items(handler, ops, V4L2_CID_TEST_PATTERN, 2097 ARRAY_SIZE(ov5648_test_pattern_menu) - 1, 2098 0, 0, ov5648_test_pattern_menu); 2099 2100 /* MIPI CSI-2 */ 2101 2102 ctrls->link_freq = 2103 v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ, 2104 ARRAY_SIZE(ov5648_link_freq_menu) - 1, 2105 0, ov5648_link_freq_menu); 2106 2107 ctrls->pixel_rate = 2108 v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, 1, 2109 INT_MAX, 1, 1); 2110 2111 if (handler->error) { 2112 ret = handler->error; 2113 goto error_ctrls; 2114 } 2115 2116 ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE; 2117 ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE; 2118 2119 ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; 2120 ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY; 2121 2122 sensor->subdev.ctrl_handler = handler; 2123 2124 return 0; 2125 2126 error_ctrls: 2127 v4l2_ctrl_handler_free(handler); 2128 2129 return ret; 2130 } 2131 2132 /* Subdev Video Operations */ 2133 2134 static int ov5648_s_stream(struct v4l2_subdev *subdev, int enable) 2135 { 2136 struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); 2137 struct ov5648_state *state = &sensor->state; 2138 int ret; 2139 2140 if (enable) { 2141 ret = pm_runtime_resume_and_get(sensor->dev); 2142 if (ret < 0) 2143 return ret; 2144 } 2145 2146 mutex_lock(&sensor->mutex); 2147 ret = ov5648_sw_standby(sensor, !enable); 2148 mutex_unlock(&sensor->mutex); 2149 2150 if (ret) 2151 return ret; 2152 2153 state->streaming = !!enable; 2154 2155 if (!enable) 2156 pm_runtime_put(sensor->dev); 2157 2158 return 0; 2159 } 2160 2161 static int ov5648_g_frame_interval(struct v4l2_subdev *subdev, 2162 struct v4l2_subdev_frame_interval *interval) 2163 { 2164 struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); 2165 const struct ov5648_mode *mode; 2166 int ret = 0; 2167 2168 mutex_lock(&sensor->mutex); 2169 2170 mode = sensor->state.mode; 2171 2172 switch (sensor->state.mbus_code) { 2173 case MEDIA_BUS_FMT_SBGGR8_1X8: 2174 interval->interval = mode->frame_interval[0]; 2175 break; 2176 case MEDIA_BUS_FMT_SBGGR10_1X10: 2177 interval->interval = mode->frame_interval[1]; 2178 break; 2179 default: 2180 ret = -EINVAL; 2181 } 2182 2183 mutex_unlock(&sensor->mutex); 2184 2185 return ret; 2186 } 2187 2188 static const struct v4l2_subdev_video_ops ov5648_subdev_video_ops = { 2189 .s_stream = ov5648_s_stream, 2190 .g_frame_interval = ov5648_g_frame_interval, 2191 .s_frame_interval = ov5648_g_frame_interval, 2192 }; 2193 2194 /* Subdev Pad Operations */ 2195 2196 static int ov5648_enum_mbus_code(struct v4l2_subdev *subdev, 2197 struct v4l2_subdev_state *sd_state, 2198 struct v4l2_subdev_mbus_code_enum *code_enum) 2199 { 2200 if (code_enum->index >= ARRAY_SIZE(ov5648_mbus_codes)) 2201 return -EINVAL; 2202 2203 code_enum->code = ov5648_mbus_codes[code_enum->index]; 2204 2205 return 0; 2206 } 2207 2208 static void ov5648_mbus_format_fill(struct v4l2_mbus_framefmt *mbus_format, 2209 u32 mbus_code, 2210 const struct ov5648_mode *mode) 2211 { 2212 mbus_format->width = mode->output_size_x; 2213 mbus_format->height = mode->output_size_y; 2214 mbus_format->code = mbus_code; 2215 2216 mbus_format->field = V4L2_FIELD_NONE; 2217 mbus_format->colorspace = V4L2_COLORSPACE_RAW; 2218 mbus_format->ycbcr_enc = 2219 V4L2_MAP_YCBCR_ENC_DEFAULT(mbus_format->colorspace); 2220 mbus_format->quantization = V4L2_QUANTIZATION_FULL_RANGE; 2221 mbus_format->xfer_func = 2222 V4L2_MAP_XFER_FUNC_DEFAULT(mbus_format->colorspace); 2223 } 2224 2225 static int ov5648_get_fmt(struct v4l2_subdev *subdev, 2226 struct v4l2_subdev_state *sd_state, 2227 struct v4l2_subdev_format *format) 2228 { 2229 struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); 2230 struct v4l2_mbus_framefmt *mbus_format = &format->format; 2231 2232 mutex_lock(&sensor->mutex); 2233 2234 if (format->which == V4L2_SUBDEV_FORMAT_TRY) 2235 *mbus_format = *v4l2_subdev_get_try_format(subdev, sd_state, 2236 format->pad); 2237 else 2238 ov5648_mbus_format_fill(mbus_format, sensor->state.mbus_code, 2239 sensor->state.mode); 2240 2241 mutex_unlock(&sensor->mutex); 2242 2243 return 0; 2244 } 2245 2246 static int ov5648_set_fmt(struct v4l2_subdev *subdev, 2247 struct v4l2_subdev_state *sd_state, 2248 struct v4l2_subdev_format *format) 2249 { 2250 struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); 2251 struct v4l2_mbus_framefmt *mbus_format = &format->format; 2252 const struct ov5648_mode *mode; 2253 u32 mbus_code = 0; 2254 unsigned int index; 2255 int ret = 0; 2256 2257 mutex_lock(&sensor->mutex); 2258 2259 if (sensor->state.streaming) { 2260 ret = -EBUSY; 2261 goto complete; 2262 } 2263 2264 /* Try to find requested mbus code. */ 2265 for (index = 0; index < ARRAY_SIZE(ov5648_mbus_codes); index++) { 2266 if (ov5648_mbus_codes[index] == mbus_format->code) { 2267 mbus_code = mbus_format->code; 2268 break; 2269 } 2270 } 2271 2272 /* Fallback to default. */ 2273 if (!mbus_code) 2274 mbus_code = ov5648_mbus_codes[0]; 2275 2276 /* Find the mode with nearest dimensions. */ 2277 mode = v4l2_find_nearest_size(ov5648_modes, ARRAY_SIZE(ov5648_modes), 2278 output_size_x, output_size_y, 2279 mbus_format->width, mbus_format->height); 2280 if (!mode) { 2281 ret = -EINVAL; 2282 goto complete; 2283 } 2284 2285 ov5648_mbus_format_fill(mbus_format, mbus_code, mode); 2286 2287 if (format->which == V4L2_SUBDEV_FORMAT_TRY) 2288 *v4l2_subdev_get_try_format(subdev, sd_state, format->pad) = 2289 *mbus_format; 2290 else if (sensor->state.mode != mode || 2291 sensor->state.mbus_code != mbus_code) 2292 ret = ov5648_state_configure(sensor, mode, mbus_code); 2293 2294 complete: 2295 mutex_unlock(&sensor->mutex); 2296 2297 return ret; 2298 } 2299 2300 static int ov5648_enum_frame_size(struct v4l2_subdev *subdev, 2301 struct v4l2_subdev_state *sd_state, 2302 struct v4l2_subdev_frame_size_enum *size_enum) 2303 { 2304 const struct ov5648_mode *mode; 2305 2306 if (size_enum->index >= ARRAY_SIZE(ov5648_modes)) 2307 return -EINVAL; 2308 2309 mode = &ov5648_modes[size_enum->index]; 2310 2311 size_enum->min_width = size_enum->max_width = mode->output_size_x; 2312 size_enum->min_height = size_enum->max_height = mode->output_size_y; 2313 2314 return 0; 2315 } 2316 2317 static int ov5648_enum_frame_interval(struct v4l2_subdev *subdev, 2318 struct v4l2_subdev_state *sd_state, 2319 struct v4l2_subdev_frame_interval_enum *interval_enum) 2320 { 2321 const struct ov5648_mode *mode = NULL; 2322 unsigned int mode_index; 2323 unsigned int interval_index; 2324 2325 if (interval_enum->index > 0) 2326 return -EINVAL; 2327 2328 /* 2329 * Multiple modes with the same dimensions may have different frame 2330 * intervals, so look up each relevant mode. 2331 */ 2332 for (mode_index = 0, interval_index = 0; 2333 mode_index < ARRAY_SIZE(ov5648_modes); mode_index++) { 2334 mode = &ov5648_modes[mode_index]; 2335 2336 if (mode->output_size_x == interval_enum->width && 2337 mode->output_size_y == interval_enum->height) { 2338 if (interval_index == interval_enum->index) 2339 break; 2340 2341 interval_index++; 2342 } 2343 } 2344 2345 if (mode_index == ARRAY_SIZE(ov5648_modes)) 2346 return -EINVAL; 2347 2348 switch (interval_enum->code) { 2349 case MEDIA_BUS_FMT_SBGGR8_1X8: 2350 interval_enum->interval = mode->frame_interval[0]; 2351 break; 2352 case MEDIA_BUS_FMT_SBGGR10_1X10: 2353 interval_enum->interval = mode->frame_interval[1]; 2354 break; 2355 default: 2356 return -EINVAL; 2357 } 2358 2359 return 0; 2360 } 2361 2362 static const struct v4l2_subdev_pad_ops ov5648_subdev_pad_ops = { 2363 .enum_mbus_code = ov5648_enum_mbus_code, 2364 .get_fmt = ov5648_get_fmt, 2365 .set_fmt = ov5648_set_fmt, 2366 .enum_frame_size = ov5648_enum_frame_size, 2367 .enum_frame_interval = ov5648_enum_frame_interval, 2368 }; 2369 2370 static const struct v4l2_subdev_ops ov5648_subdev_ops = { 2371 .video = &ov5648_subdev_video_ops, 2372 .pad = &ov5648_subdev_pad_ops, 2373 }; 2374 2375 static int ov5648_suspend(struct device *dev) 2376 { 2377 struct i2c_client *client = to_i2c_client(dev); 2378 struct v4l2_subdev *subdev = i2c_get_clientdata(client); 2379 struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); 2380 struct ov5648_state *state = &sensor->state; 2381 int ret = 0; 2382 2383 mutex_lock(&sensor->mutex); 2384 2385 if (state->streaming) { 2386 ret = ov5648_sw_standby(sensor, true); 2387 if (ret) 2388 goto complete; 2389 } 2390 2391 ret = ov5648_sensor_power(sensor, false); 2392 if (ret) 2393 ov5648_sw_standby(sensor, false); 2394 2395 complete: 2396 mutex_unlock(&sensor->mutex); 2397 2398 return ret; 2399 } 2400 2401 static int ov5648_resume(struct device *dev) 2402 { 2403 struct i2c_client *client = to_i2c_client(dev); 2404 struct v4l2_subdev *subdev = i2c_get_clientdata(client); 2405 struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); 2406 struct ov5648_state *state = &sensor->state; 2407 int ret = 0; 2408 2409 mutex_lock(&sensor->mutex); 2410 2411 ret = ov5648_sensor_power(sensor, true); 2412 if (ret) 2413 goto complete; 2414 2415 ret = ov5648_sensor_init(sensor); 2416 if (ret) 2417 goto error_power; 2418 2419 ret = __v4l2_ctrl_handler_setup(&sensor->ctrls.handler); 2420 if (ret) 2421 goto error_power; 2422 2423 if (state->streaming) { 2424 ret = ov5648_sw_standby(sensor, false); 2425 if (ret) 2426 goto error_power; 2427 } 2428 2429 goto complete; 2430 2431 error_power: 2432 ov5648_sensor_power(sensor, false); 2433 2434 complete: 2435 mutex_unlock(&sensor->mutex); 2436 2437 return ret; 2438 } 2439 2440 static int ov5648_probe(struct i2c_client *client) 2441 { 2442 struct device *dev = &client->dev; 2443 struct fwnode_handle *handle; 2444 struct ov5648_sensor *sensor; 2445 struct v4l2_subdev *subdev; 2446 struct media_pad *pad; 2447 unsigned long rate; 2448 int ret; 2449 2450 sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); 2451 if (!sensor) 2452 return -ENOMEM; 2453 2454 sensor->dev = dev; 2455 sensor->i2c_client = client; 2456 2457 /* Graph Endpoint */ 2458 2459 handle = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL); 2460 if (!handle) { 2461 dev_err(dev, "unable to find endpoint node\n"); 2462 return -EINVAL; 2463 } 2464 2465 sensor->endpoint.bus_type = V4L2_MBUS_CSI2_DPHY; 2466 2467 ret = v4l2_fwnode_endpoint_alloc_parse(handle, &sensor->endpoint); 2468 fwnode_handle_put(handle); 2469 if (ret) { 2470 dev_err(dev, "failed to parse endpoint node\n"); 2471 return ret; 2472 } 2473 2474 /* GPIOs */ 2475 2476 sensor->powerdown = devm_gpiod_get_optional(dev, "powerdown", 2477 GPIOD_OUT_HIGH); 2478 if (IS_ERR(sensor->powerdown)) { 2479 ret = PTR_ERR(sensor->powerdown); 2480 goto error_endpoint; 2481 } 2482 2483 sensor->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); 2484 if (IS_ERR(sensor->reset)) { 2485 ret = PTR_ERR(sensor->reset); 2486 goto error_endpoint; 2487 } 2488 2489 /* Regulators */ 2490 2491 /* DVDD: digital core */ 2492 sensor->dvdd = devm_regulator_get(dev, "dvdd"); 2493 if (IS_ERR(sensor->dvdd)) { 2494 dev_err(dev, "cannot get DVDD (digital core) regulator\n"); 2495 ret = PTR_ERR(sensor->dvdd); 2496 goto error_endpoint; 2497 } 2498 2499 /* DOVDD: digital I/O */ 2500 sensor->dovdd = devm_regulator_get(dev, "dovdd"); 2501 if (IS_ERR(sensor->dovdd)) { 2502 dev_err(dev, "cannot get DOVDD (digital I/O) regulator\n"); 2503 ret = PTR_ERR(sensor->dovdd); 2504 goto error_endpoint; 2505 } 2506 2507 /* AVDD: analog */ 2508 sensor->avdd = devm_regulator_get_optional(dev, "avdd"); 2509 if (IS_ERR(sensor->avdd)) { 2510 dev_info(dev, "no AVDD regulator provided, using internal\n"); 2511 sensor->avdd = NULL; 2512 } 2513 2514 /* External Clock */ 2515 2516 sensor->xvclk = devm_clk_get(dev, NULL); 2517 if (IS_ERR(sensor->xvclk)) { 2518 dev_err(dev, "failed to get external clock\n"); 2519 ret = PTR_ERR(sensor->xvclk); 2520 goto error_endpoint; 2521 } 2522 2523 rate = clk_get_rate(sensor->xvclk); 2524 if (rate != OV5648_XVCLK_RATE) { 2525 dev_err(dev, "clock rate %lu Hz is unsupported\n", rate); 2526 ret = -EINVAL; 2527 goto error_endpoint; 2528 } 2529 2530 /* Subdev, entity and pad */ 2531 2532 subdev = &sensor->subdev; 2533 v4l2_i2c_subdev_init(subdev, client, &ov5648_subdev_ops); 2534 2535 subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 2536 subdev->entity.function = MEDIA_ENT_F_CAM_SENSOR; 2537 2538 pad = &sensor->pad; 2539 pad->flags = MEDIA_PAD_FL_SOURCE; 2540 2541 ret = media_entity_pads_init(&subdev->entity, 1, pad); 2542 if (ret) 2543 goto error_entity; 2544 2545 /* Mutex */ 2546 2547 mutex_init(&sensor->mutex); 2548 2549 /* Sensor */ 2550 2551 ret = ov5648_ctrls_init(sensor); 2552 if (ret) 2553 goto error_mutex; 2554 2555 ret = ov5648_state_init(sensor); 2556 if (ret) 2557 goto error_ctrls; 2558 2559 /* Runtime PM */ 2560 2561 pm_runtime_enable(sensor->dev); 2562 pm_runtime_set_suspended(sensor->dev); 2563 2564 /* V4L2 subdev register */ 2565 2566 ret = v4l2_async_register_subdev_sensor(subdev); 2567 if (ret) 2568 goto error_pm; 2569 2570 return 0; 2571 2572 error_pm: 2573 pm_runtime_disable(sensor->dev); 2574 2575 error_ctrls: 2576 v4l2_ctrl_handler_free(&sensor->ctrls.handler); 2577 2578 error_mutex: 2579 mutex_destroy(&sensor->mutex); 2580 2581 error_entity: 2582 media_entity_cleanup(&sensor->subdev.entity); 2583 2584 error_endpoint: 2585 v4l2_fwnode_endpoint_free(&sensor->endpoint); 2586 2587 return ret; 2588 } 2589 2590 static void ov5648_remove(struct i2c_client *client) 2591 { 2592 struct v4l2_subdev *subdev = i2c_get_clientdata(client); 2593 struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); 2594 2595 v4l2_async_unregister_subdev(subdev); 2596 pm_runtime_disable(sensor->dev); 2597 v4l2_ctrl_handler_free(&sensor->ctrls.handler); 2598 mutex_destroy(&sensor->mutex); 2599 media_entity_cleanup(&subdev->entity); 2600 v4l2_fwnode_endpoint_free(&sensor->endpoint); 2601 } 2602 2603 static const struct dev_pm_ops ov5648_pm_ops = { 2604 SET_RUNTIME_PM_OPS(ov5648_suspend, ov5648_resume, NULL) 2605 }; 2606 2607 static const struct of_device_id ov5648_of_match[] = { 2608 { .compatible = "ovti,ov5648" }, 2609 { } 2610 }; 2611 MODULE_DEVICE_TABLE(of, ov5648_of_match); 2612 2613 static struct i2c_driver ov5648_driver = { 2614 .driver = { 2615 .name = "ov5648", 2616 .of_match_table = ov5648_of_match, 2617 .pm = &ov5648_pm_ops, 2618 }, 2619 .probe_new = ov5648_probe, 2620 .remove = ov5648_remove, 2621 }; 2622 2623 module_i2c_driver(ov5648_driver); 2624 2625 MODULE_AUTHOR("Paul Kocialkowski <paul.kocialkowski@bootlin.com>"); 2626 MODULE_DESCRIPTION("V4L2 driver for the OmniVision OV5648 image sensor"); 2627 MODULE_LICENSE("GPL v2"); 2628